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L78xx - L78xxC L78xxAB - L78xxAC
Positive voltage regulators
Features

Output current up to 1.5 A Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V Thermal overload protection Short circuit protection Output transition SOA protection 2 % output voltage tolerance (A version) Guaranteed in extended temperature range (A version)
TO-220 TO-220FP
Description
The L78xx series of three-terminal positive regulators is available in TO-220, TO-220FP, TO3, DPAK and DPAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.
TO-3 DPAK DPAK
Table 1.
Device summary
Part numbers L7805 L7805C L7805AB L7805AC L7806C L7806AB L7806AC L7808C L7808AB L7808AC L7885C L7809C L7809AB L7809AC L7812C L7812AB L7812AC L7815C L7815AB L7815AC L7818C L7824C L7824AB L7824AC
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Contents
L78xx, L78xxC, L78xxAB, L78xxAC
Contents
1 2 3 4 5 6 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.1 Design consideration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7 8 9 10
Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
List of tables
List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical characteristics of L7805 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics of L7805A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Electrical characteristics of L7806A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical characteristics of L7808A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Electrical characteristics of L7809A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Electrical characteristics of L7812A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Electrical characteristics of L7815A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Electrical characteristics of L7824A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Electrical characteristics of L7805C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Electrical characteristics of L7806C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Electrical characteristics of L7808C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Electrical characteristics of L7885C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Electrical characteristics of L7809C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Electrical characteristics of L7810C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Electrical characteristics of L7812C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Electrical characteristics of L7815C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Electrical characteristics of L7818C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Electrical characteristics of L7820C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Electrical characteristics of L7824C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 TO-220 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 TO-220FP mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 TO-3 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 DPAK footprint data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Tape and reel DPAK mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
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List of figures
L78xx, L78xxC, L78xxAB, L78xxAC
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Figure 49.
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Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DC parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ripple rejection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Fixed output regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Current regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Circuit for increasing output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Adjustable output regulator (7 to 30 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 0.5 to 10 V regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 High current voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 High output current with short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Tracking voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Split power supply ( 15 V - 1 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Negative output voltage circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 High input voltage circuit (configuration 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 High input voltage circuit (configuration 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 High output voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 High input and output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Reducing power dissipation with dropping resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Remote shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Power AM modulator (unity voltage gain, IO 0.5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Adjustable output voltage with temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . 35 Light controllers (VO(min) = VXX + VBE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Protection against input short-circuit with high capacitance loads . . . . . . . . . . . . . . . . . . . 36 Dropout voltage vs. junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Peak output current vs. input/output differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Output voltage vs. junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Output impedance vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Quiescent current vs. junction temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Load transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Line transient response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Quiescent current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Drawing dimension TO-220 (type STD-ST Dual Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Drawing dimension TO-220 (type STD-ST Single Gauge) . . . . . . . . . . . . . . . . . . . . . . . . . 41 Drawing dimension tube for TO-220 Dual Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Drawing dimension tube for TO-220 Single Gauge (mm.) . . . . . . . . . . . . . . . . . . . . . . . . . 42 Drawing dimension TO-220FP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Drawing dimension TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Drawing dimension DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Drawing dimension tape and reel for DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Drawing dimension DPAK (type STD-ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Drawing dimension DPAK (type WOOSEOK-Subcon.). . . . . . . . . . . . . . . . . . . . . . . . . . . 50 DPAK footprint recommended data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Drawing dimension tape and reel for DPAK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Diagram
1
Figure 1.
Diagram
Block diagram
Doc ID 2143 Rev 22
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Pin configuration
L78xx, L78xxC, L78xxAB, L78xxAC
2
Figure 2.
Pin configuration
Pin connections (top view)
TO-220
TO-220FP
DPAK (Any Type)
DPAK
TO-3
Figure 3.
Schematic diagram
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Maximum ratings
3
Table 2.
Symbol VI IO PD TSTG
Maximum ratings
Absolute maximum ratings
Parameter DC input voltage Output current Power dissipation Storage temperature range for L78xx TOP Operating junction temperature range for L78xxC, L78xxAC for L78xxAB for VO= 5 to 18 V for VO= 20, 24 V Value 35 V 40 Internally limited Internally limited -65 to 150 -55 to 150 0 to 125 -40 to 125 C C Unit
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Thermal data
Parameter Thermal resistance junction-case Thermal resistance junction-ambient DPAK 3 62.5 DPAK 8 100 TO-220 5 50 TO-220FP 5 60 TO-3 4 35 Unit C/W C/W
Table 3.
Symbol RthJC RthJA
Figure 4.
Application circuits
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Test circuits
L78xx, L78xxC, L78xxAB, L78xxAC
4
Figure 5.
Test circuits
DC parameter
Figure 6.
Load regulation
Figure 7.
Ripple rejection
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
5
Electrical characteristics
Refer to the test circuits, TJ = -55 to 150 C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified.
Table 4.
Symbol VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7805
Parameter Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 8 to 20 V VI = 7 to 25 V, TJ = 25C VI = 8 to 12 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 8 to 25 V IO = 5 mA B =10 Hz to 100 kHz, TJ = 25C VI = 8 to 18 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 1.3 68 2 17 0.75 2.2 1.2 3.3 2.5 0.6 40 Test conditions Min. 4.8 4.65 Typ. 5 5 3 1 Max. 5.2 5.35 50 mV 25 100 mV 25 6 0.5 mA 0.8 mV/C V/VO dB V m A A mA Unit V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
VI = 10 V, IO = 1 A, TJ = 0 to 125 C (L7805AC), TJ = -40 to 125 C (L7805AB), unless otherwise specified. Table 5.
Symbol VO VO VO
Electrical characteristics of L7805A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 7.5 to 18 V IO = 1 A, VI = 18 to 20 V, TJ = 25C VI = 7.5 to 25 V, IO = 500 mA Test conditions Min. 4.9 4.8 4.8 Typ. 5 5 5 7 10 2 7 25 30 8 4.3 Max. 5.1 5.2 5.2 50 50 25 50 100 100 50 6 6 VI = 8 to 23 V, IO = 500 mA 0.8 0.8 0.5 68 2 10 17 0.2 2.2 -1.1 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 8 to 12 V VI = 8 to 12 V, TJ = 25C VI = 7.3 to 20 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 7.5 to 20 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 8 to 18 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B =10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
VI = 11 V, IO = 1 A, TJ = 0 to 125 C (L7806AC), TJ = -40 to 125 C (L7806AB), unless otherwise specified. Table 6.
Symbol VO VO VO
Electrical characteristics of L7806A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 8.6 to 19 V IO = 1 A, VI = 19 to 21 V, TJ = 25C VI = 8.6 to 25 V, IO = 500 mA Test conditions Min. 5.88 5.76 5.76 Typ. 6 6 6 9 11 3 9 25 30 10 4.3 Max. 6.12 6.24 6.24 60 60 30 60 100 100 50 6 6 VI = 9 to 24 V, IO = 500 mA 0.8 0.8 0.5 65 2 10 17 0.2 2.2 -0.8 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 9 to 13 V VI = 9 to 13 V, TJ = 25C VI = 8.3 to 21 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 8.6 to 21 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 9 to 19 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B =10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
VI = 14 V, IO = 1 A, TJ = 0 to 125 C (L7808AC), TJ = -40 to 125 C (L7808AB), unless otherwise specified. Table 7.
Symbol VO VO VO
Electrical characteristics of L7808A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 10.6 to 21 V IO = 1 A, VI = 21 to 23 V, TJ = 25C VI = 10.6 to 25 V, IO = 500 mA Test conditions Min. 7.84 7.7 7.7 Typ. 8 8 8 12 15 5 12 25 30 10 4.3 Max. 8.16 8.3 8.3 80 80 40 80 100 100 50 6 6 VI = 11 to 23 V, IO = 500 mA 0.8 0.8 0.5 62 2 10 18 0.2 2.2 -0.8 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 11 to 17 V VI = 11 to 17 V, TJ = 25C VI = 10.4 to 23 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 10.6 to 23 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 11.5 to 21.5 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B =10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
VI = 15 V, IO = 1 A, TJ = 0 to 125 C (L7809AC), TJ = -40 to 125 C (L7809AB), unless otherwise specified. Table 8.
Symbol VO VO VO
Electrical characteristics of L7809A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 10.6 to 22 V IO = 1 A, VI = 22 to 24 V, TJ = 25C VI = 10.6 to 25 V, IO = 500 mA Test conditions Min. 8.82 8.65 8.65 Typ. 9 9 9 12 15 5 12 25 30 10 4.3 Max. 9.18 9.35 9.35 90 90 45 90 100 100 50 6 6 VI = 11 to 25 V, IO = 500 mA 0.8 0.8 0.5 61 2 10 18 0.2 2.2 -0.8 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 11 to 17 V VI = 11 to 17 V, TJ = 25C VI = 10.4 to 23 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 10.6 to 23 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 11.5 to 21.5 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B =10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
VI = 19 V, IO = 1 A, TJ = 0 to 125 C (L7812AC), TJ = -40 to 125 C (L7812AB), unless otherwise specified. Table 9.
Symbol VO VO VO
Electrical characteristics of L7812A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 14.8 to 25 V IO = 1 A, VI = 25 to 27 V, TJ = 25C VI = 14.8 to 30 V, IO = 500 mA Test conditions Min. 11.75 11.5 11.5 Typ. 12 12 12 13 16 6 13 25 30 10 4.4 Max. 12.25 12.5 12.5 120 120 60 120 100 100 50 6 6 VI = 15 to 30 V, IO = 500 mA 0.8 0.8 0.5 60 2 10 18 0.2 2.2 -1 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 16 to 12 V VI = 16 to 12 V, TJ = 25C VI = 14.5 to 27 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 14.8 to 27 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 15 to 25 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B = 10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
VI = 23 V, IO = 1 A, TJ = 0 to 125 C (L7815AC), TJ = -40 to 125 C (L7815AB), unless otherwise specified. Table 10.
Symbol VO VO VO
Electrical characteristics of L7815A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 17.9 to 28 V IO = 1 A, VI = 28 to 30 V, TJ = 25C VI = 17.9 to 30 V, IO = 500 mA Test conditions Min. 14.7 14.4 14.4 Typ. 15 15 15 13 16 6 13 25 30 10 4.4 Max. 15.3 15.6 15.6 150 150 75 150 100 100 50 6 6 VI = 17.5 to 30 V, IO = 500 mA 0.8 0.8 0.5 58 2 10 19 0.2 2.2 -1 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 20 to 26 V VI = 20 to 26 V, TJ = 25C VI = 17.5 to 30 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 17.5 to 30 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 18.5 to 28.5 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B = 10Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
VI = 33 V, IO = 1 A, TJ = 0 to 125 C (L7824AC), TJ = -40 to 125 C (L7824AB), unless otherwise specified. Table 11.
Symbol VO VO VO
Electrical characteristics of L7824A
Parameter Output voltage Output voltage Output voltage TJ = 25C IO = 5 mA to 1 A, VI = 27.3 to 37 V IO = 1 A, VI = 37 to 38 V, TJ = 25C VI = 27 to 38 V, IO = 500 mA Test conditions Min. 23.5 23 23 Typ. 24 24 24 31 35 14 31 25 30 10 4.6 Max. 24.5 25 25 240 200 120 240 100 100 50 6 6 VI = 27.3 to 38 V, IO = 500 mA 0.8 0.8 0.5 54 2 10 20 0.2 2.2 -1.5 Unit V V V mV mV mV mV mV V V mA mA mA mA mA dB V V/VO m A A mV/C
VO (1)
Line regulation
VI = 30 to 36 V VI = 30 to 36 V, TJ = 25C VI = 26.7 to 38 V, TJ = 25C IO = 5 mA to 1 A
VO
(1)
Load regulation
IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA
Iq
Quiescent current
TJ = 25C
Iq
Quiescent current change
VI = 27.3 to 38 V, TJ = 25C IO = 5 mA to 1 A
SVR Vd eN RO Isc Iscp VO/T
Supply voltage rejection Dropout voltage Output noise voltage Output resistance Short circuit current Short circuit peak current Output voltage drift
VI = 28 to 38 V, f = 120 Hz, IO = 500 mA IO = 1 A, TJ = 25C TA = 25C, B = 10 Hz to 100 kHz f = 1 kHz VI = 35 V, TA = 25C TJ = 25C
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 10 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 12.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7805C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 7 to 18 V IO = 1 A, VI = 18 to 20V, TJ = 25C VI = 7 to 25 V, TJ = 25C VI = 8 to 12 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 7 to 23 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 8 to 18 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 62 2 17 0.75 2.2 -1.1 40 Test conditions Min. 4.8 4.75 4.75 Typ. 5 5 5 3 1 Max. 5.2 5.25 5.25 100 mV 50 100 mV 50 8 0.5 mA 0.8 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
17/56
Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
Refer to the test circuits, TJ = 0 to 125 C, VI = 11 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 13.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7806C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 8 to 19 V IO = 1 A, VI = 19 to 21 V, TJ = 25C VI = 8 to 25 V, TJ = 25C VI = 9 to 13 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 8 to 24 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 9 to 19 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 59 2 19 0.55 2.2 -0.8 45 Test conditions Min. 5.75 5.7 5.7 Typ. 6 6 6 Max. 6.25 6.3 6.3 120 mV 60 120 mV 60 8 0.5 mA 1.3 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 14 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 14.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7808C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 10.5 to 21 V IO = 1 A, VI = 21 to 25 V, TJ = 25C VI = 10.5 to 25 V, TJ = 25C VI = 11 to 17 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 10.5 to 25 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 11.5 to 21.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 56 2 16 0.45 2.2 -0.8 52 Test conditions Min. 7.7 7.6 7.6 Typ. 8 8 8 Max. 8.3 8.4 8.4 160 mV 80 160 mV 80 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
Refer to the test circuits, TJ = 0 to 125 C, VI = 14.5 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 15.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7885C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 11 to 21.5 V IO = 1 A, VI = 21.5 to 26 V, TJ = 25C VI = 11 to 27 V, TJ = 25C VI = 11.5 to 17.5 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 11 to 26 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 12 to 22 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 56 2 16 0.45 2.2 -0.8 55 Test conditions Min. 8.2 8.1 8.1 Typ. 8.5 8.5 8.5 Max. 8.8 8.9 8.9 160 mV 80 160 mV 80 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 16.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7809C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 11.5 to 22 V IO = 1 A, VI = 22 to 26 V, TJ = 25C VI = 11.5 to 26 V, TJ = 25C VI = 12 to 18 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 11.5 to 26 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 12 to 23 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 55 2 17 0.40 2.2 -1 70 Test conditions Min. 8.64 8.55 8.55 Typ. 9 9 9 Max. 9.36 9.45 9.45 180 mV 90 180 mV 90 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
Refer to the test circuits, TJ = 0 to 125 C, VI = 15 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 17.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7810C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 12.5 to 23 V IO = 1 A, VI = 23 to 26 V, TJ = 25C VI = 12.5 to 26 V, TJ = 25C VI = 13.5 to 19 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 12.5 to 26 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 13 to 23 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 55 2 17 0.40 2.2 -1 70 Test conditions Min. 9.6 9.5 9.5 Typ. 10 10 10 Max. 10.4 10.5 10.5 200 mV 100 200 mV 100 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 19 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 18.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7812C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 14.5 to 25 V IO = 1 A, VI = 25 to 27 V, TJ = 25C VI = 14.5 to 30 V, TJ = 25C VI = 16 to 22 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 14.5 to 30 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 15 to 25 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 55 2 18 0.35 2.2 -1 75 Test conditions Min. 11.5 11.4 11.4 Typ. 12 12 12 Max. 12.5 12.6 12.6 240 mV 120 240 mV 120 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
Refer to the test circuits, TJ = 0 to 125 C, VI = 23 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 19.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7815C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 17.5 to 28 V IO = 1 A, VI = 28 to 30 V, TJ = 25C VI = 17.5 to 30 V, TJ = 25C VI = 20 to 26 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1A VI = 17.5 to 30 V IO = 5 mA B = 10 Hz to 100kHz, TJ = 25C VI = 18.5 to 28.5 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 54 2 19 0.23 2.2 -1 90 Test conditions Min. 14.5 14.25 14.25 Typ. 15 15 15 Max. 15.6 15.75 15.75 300 mV 150 300 mV 150 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 26 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 20.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7818C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 21 to 31 V IO = 1 A, VI = 31 to 33 V, TJ = 25C VI = 21 to 33 V, TJ = 25C VI = 24 to 30 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 21 to 33 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 22 to 32 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 53 2 22 0.20 2.1 -1 110 Test conditions Min. 17.3 17.1 17.1 Typ. 18 18 18 Max. 18.7 18.9 18.9 360 mV 180 360 mV 180 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
Refer to the test circuits, TJ = 0 to 125 C, VI = 28 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 21.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7820C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 23 to 33 V IO = 1 A, VI = 33 to 35 V, TJ = 25C VI = 22.5 to 35 V, TJ = 25C VI = 26 to 32 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 23 to 35 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 24 to 35 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 52 2 24 0.18 2.1 -1 150 Test conditions Min. 19.2 19 19 Typ. 20 20 20 Max. 20.8 21 21 400 mV 200 400 mV 200 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 C, VI = 33 V, IO = 500 mA, CI = 0.33 F, CO = 0.1 F unless otherwise specified. Table 22.
Symbol VO VO VO VO(1) VO(1) Id Id VO/T eN SVR Vd RO Isc Iscp
Electrical characteristics of L7824C
Parameter Output voltage Output voltage Output voltage Line regulation TJ = 25C IO = 5 mA to 1 A, VI = 27 to 37 V IO = 1 A, VI = 37 to 38 V, TJ = 25C VI = 27 to 38 V, TJ = 25C VI = 30 to 36 V, TJ = 25C Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Supply voltage rejection Dropout voltage Output resistance Short circuit current Short circuit peak current IO = 5 mA to 1.5 A, TJ = 25C IO = 250 to 750 mA, TJ = 25C TJ = 25C IO = 5 mA to 1 A VI = 27 to 38 V IO = 5 mA B = 10 Hz to 100 kHz, TJ = 25C VI = 28 to 38 V, f = 120 Hz IO = 1 A, TJ = 25C f = 1 kHz VI = 35 V, TJ = 25C TJ = 25C 50 2 28 0.15 2.1 -1.5 170 Test conditions Min. 23 22.8 22.8 Typ. 24 24 24 Max. 25 25.2 25.2 480 mV 240 480 mV 240 8 0.5 mA 1 mV/C V/VO dB V m A A mA Unit V V V
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 22
27/56
Application information
L78xx, L78xxC, L78xxAB, L78xxAC
6
6.1
Application information
Design consideration
The L78xx Series of fixed voltage regulators are designed with thermal overload protection that shuts down the circuit when subjected to an excessive power overload condition, internal short-circuit protection that limits the maximum current the circuit will pass, and output transistor safe-area compensation that reduces the output short-circuit current as the voltage across the pass transistor is increased. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with capacitor if the regulator is connected to the power supply filter with long lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33 F or larger tantalum, mylar or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. The addition of an operational amplifier allows adjustment to higher or intermediate values while retaining regulation characteristics. The minimum voltage obtained with the arrangement is 2 V greater than the regulator voltage. The circuit of Figure 13 can be modified to provide supply protection against short circuit by adding a short circuit sense resistor, RSC, and an additional PNP transistor. The current sensing PNP must be able to handle the short circuit current of the three terminal regulator Therefore a four ampere plastic power transistor is specified.
Figure 8.
Fixed output regulator
1. To specify an output voltage, substitute voltage value for "XX". 2. Although no output capacitor is need for stability, it does improve transient response. 3. Required if regulator is locate an appreciable distance from power supply filter.
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Application information
Figure 9.
Current regulator
IO = VXX/R1+Id
Figure 10. Circuit for increasing output voltage
IR1 5 Id VO = VXX(1+R2/R1)+IdR2
Figure 11. Adjustable output regulator (7 to 30 V)
Doc ID 2143 Rev 22
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Application information
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 12. 0.5 to 10 V regulator
VO=VXXR4/R1
Figure 13. High current voltage regulator
VBEQ1 R1 = ______________ IREQ-(IQ1/bQ1) VBEQ1 IO = IREG + Q1 (IREG ______) R1
Figure 14. High output current with short circuit protection
RSC=VBEQ2/ISC
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Application information
Figure 15. Tracking voltage regulator
Figure 16. Split power supply ( 15 V - 1 A)
* Against potential latch-up problems.
Doc ID 2143 Rev 22
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Application information
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 17. Negative output voltage circuit
Figure 18. Switching regulator
Figure 19. High input voltage circuit (configuration 1)
VIN = VI - (VZ + VBE)
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Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Application information
Figure 20. High input voltage circuit (configuration 2)
Figure 21. High output voltage regulator
Figure 22. High input and output voltage
VO = VXX + VZ1
Doc ID 2143 Rev 22
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Application information
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 23. Reducing power dissipation with dropping resistor
VI(min)-VXX-VDROP(max) R = ____________________ IO(max)+Id(max)
Figure 24. Remote shutdown
Figure 25. Power AM modulator (unity voltage gain, IO 0.5)
Note:
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The circuit performs well up to 100 kHz.
Doc ID 2143 Rev 22
L78xx, L78xxC, L78xxAB, L78xxAC
Application information
Figure 26. Adjustable output voltage with temperature compensation
VO = VXX (1+R2/R1) + VBE
Note:
Q2 is connected as a diode in order to compensate the variation of the Q1 VBE with the temperature. C allows a slow rise time of the VO.
Figure 27. Light controllers (VO(min) = VXX + VBE)
VO falls when the light goes up
VO rises when the light goes up
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Application information
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 28. Protection against input short-circuit with high capacitance loads
Note:
Application with high capacitance loads and an output voltage greater than 6 volts need an external diode (see Figure 23 on page 34) to protect the device against input short circuit. In this case the input voltage falls rapidly while the output voltage decrease slowly. The capacitance discharges by means of the base-emitter junction of the series pass transistor in the regulator. If the energy is sufficiently high, the transistor may be destroyed. The external diode by-passes the current from the IC to ground.
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Typical performance
7
Typical performance
Figure 30. Peak output current vs. input/output differential voltage
Figure 29. Dropout voltage vs. junction temperature
Figure 31. Supply voltage rejection vs. frequency
Figure 32. Output voltage vs. junction temperature
Figure 33. Output impedance vs. frequency
Figure 34. Quiescent current vs. junction temp.
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Typical performance
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 35. Load transient response
Figure 36. Line transient response
Figure 37. Quiescent current vs. input voltage
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Package mechanical data
8
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark.
Table 23.
TO-220 mechanical data
Type STD - ST Dual Gauge Type STD - ST Single Gauge mm. Max. 4.60 0.88 1.70 0.70 15.75 1.27 10.00 2.40 4.95 1.23 6.20 2.40 13.00 3.50 16.40 28.90 3.75 2.65 3.85 2.95 3.75 2.65 10.40 2.70 5.15 1.32 6.60 2.72 14.00 3.93 10.00 2.40 4.95 0.51 6.20 2.40 13.00 3.50 16.40 28.90 3.85 2.95 10.40 2.70 5.15 0.60 6.60 2.72 14.00 3.93 Min. 4.40 0.61 1.14 0.48 15.25 Typ. Max. 4.60 0.88 1.70 0.70 15.75
Dim. Min. A b b1 c D D1 E e e1 F H1 J1 L L1 L20 L30 P Q 4.40 0.61 1.14 0.48 15.25
mm. Typ.
In spite of some difference in tolerances, the packages are compatible.
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 38. Drawing dimension TO-220 (type STD-ST Dual Gauge)
0015988_S
Note:
1 2
Maximum resin gate protrusion: 0.5 mm. Resin gate position is accepted in each of the two positions shown on the drawing, or their symmetrical.
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Package mechanical data
Figure 39. Drawing dimension TO-220 (type STD-ST Single Gauge)
8174627_B
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 40. Drawing dimension tube for TO-220 Dual Gauge (mm.)
Figure 41. Drawing dimension tube for TO-220 Single Gauge (mm.)
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Package mechanical data
Figure 42. Drawing dimension TO-220FP
7012510A-H
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Table 24.
Dim.
TO-220FP mechanical data
mm. Min. Typ. Max. 4.60 2.7 2.75 0.70 1 1.50 1.50 5.2 2.7 10.40 16 28.6 9.8 2.9 15.9 9 3 30.6 10.6 3.6 16.4 9.3 3.2 1.126 0.385 0.114 0.626 0.354 0.118 Min. 0.173 0.098 0.098 0.017 0.030 0.045 0.045 0.194 0.094 0.393 0.630 1.204 0.417 0.142 0.645 0.366 0.126 inch. Typ. Max. 0.181 0.106 0.108 0.027 0.039 0.059 0.059 0.204 0.106 0.409
A B D E F F1 F2 G G1 H L2 L3 L4 L5 L6 L7 DIA.
4.40 2.5 2.5 0.45 0.75 1.15 1.15 4.95 2.4 10.0
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Package mechanical data
Figure 43. Drawing dimension TO-3
P G
A
D C
U
V
O
N
R
P003C/C
Table 25.
Dim.
TO-3 mechanical data
mm. Min. Typ. 11.85 0.96 1.05 1.10 1.70 8.7 20.0 10.9 16.9 26.2 3.88 4.09 39.5 30.10 1.185 0.152 0.429 0.665 1.031 0.161 1.555 0.037 Max. Min. inch. Typ. 0.466 0.041 0.043 0.066 0.342 0.787 Max.
A B C D E G N P R U V
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B
E
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 44. Drawing dimension DPAK
0068772-F
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Package mechanical data
Table 26.
Dim.
DPAK mechanical data
mm. Min. Typ. Max. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0 8 0 1 0.023 0.008 8 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 Min. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 inch. Typ. Max. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244
A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2
2.2 0.9 0.03 0.64 5.2 0.45 0.48 6
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 45. Drawing dimension tape and reel for DPAK
Table 27.
Dim.
Tape and reel DPAK mechanical data
mm. Min. Typ. Max. 330 12.8 20.2 60 22.4 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 13.2 0.504 0.795 2.362 0.882 0.2.76 0.417 0.105 0.161 0.319 0.512 Min. inch. Typ. Max. 12.992 0.519
A C D N T Ao Bo Ko Po P
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Package mechanical data
Figure 46. Drawing dimension DPAK (type STD-ST)
0079457/L
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 47. Drawing dimension DPAK (type WOOSEOK-Subcon.)
0079457/L 50/56 Doc ID 2143 Rev 22
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Package mechanical data
Table 28.
DPAK mechanical data
Type STD-ST Type WOOSEOK-Subcon. mm. Max. 4.60 0.23 0.93 1.70 0.60 1.36 9.35 Min. 4.30 0 0.70 1.17 0.45 1.25 9 7.50 10.40 9.80 7.50 2.54 4.88 15 2.49 2.29 1.27 1.30 0.4 0 8 0 5.28 15.85 2.69 2.79 1.40 1.75 15 2.20 1.79 1 1.20 0.30 3 2.54 5.08 15.30 15.60 2.60 2.79 1.40 1.60 10.20 0.50 1.30 9.20 Typ. Max. 4.70 0.20 0.90 1.37 0.60 1.40 9.40
Dim. Min. A A1 b b2 c c2 D D1 E E1 e e1 H J1 L L1 L2 R V2 4.40 0.03 0.70 1.14 0.45 1.23 8.95 7.50 10 8.50
mm. Typ.
Note:
The DPAK package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint.
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Package mechanical data
L78xx, L78xxC, L78xxAB, L78xxAC
Figure 48. DPAK footprint recommended data
Table 29.
DPAK footprint data
Values Dim. A B C D E F G mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 inch. 0.480 0.384 0.665 0.138 0.063 0.100 0.200
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Package mechanical data
Table 30.
Dim.
Tape and reel DPAK mechanical data
mm. Min. Typ. Max. 180 12.8 20.2 60 14.4 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 Min. inch. Typ. Max. 7.086 0.519
A C D N T Ao Bo Ko Po P
Figure 49. Drawing dimension tape and reel for DPAK
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Order codes
L78xx, L78xxC, L78xxAB, L78xxAC
9
Table 31.
Part numbers L7805 L7805C L7805AB L7805AC L7806C L7806AB L7806AC L7808C L7808AB L7808AC L7885C L7809C L7809AB L7809AC L7812C L7812AB L7812AC L7815C L7815AB L7815AC L7818C L7824C L7824AB L7824AC
Order codes
Order codes
Order codes TO-220 DPAK DPAK TO-220FP TO-3 L7805T L7805CV L7805ABV L7805ACV L7806CV L7806ABV L7806ACV L7808CV L7808ABV L7808ACV L7885CV L7809CV L7809ABV L7809ACV L7812CV L7812ABV L7812ACV L7815CV L7815ABV L7815ACV L7818CV L7824CV L7824ABV L7824ACV L7812CD2T-TR L7812ABD2T-TR L7812ACD2T-TR L7815CD2T-TR L7815ABD2T-TR L7815ACD2T-TR L7818CD2T-TR
(1)
Output voltages 5V 5V 5V 5V
L7805CDT-TR
L7805CD2T-TR L7805ABD2T-TR L7805ACD2T-TR L7806CD2T-TR L7806ABD2T-TR
L7805CP L7805ABP L7805ACP
L7805CT
L7806CT
6V 6V 6V
L7808CD2T-TR L7808ABD2T-TR
L7808CP
8V 8V 8V
L7885CD2T-TR
(1)
L7885CP
(1)
L7885CT
(1)
8.5 V 9V 9V 9V
L7809CD2T-TR L7809ABD2T-TR
L7809CP
L7812CP
L7812CT
12 V 12 V 12 V
L7815CP
L7815CT
15 V 15 V 15 V
L7818CT L7824CP L7824CT
18 V 24 V 24 V 24 V
L7824CD2T-TR L7824ABD2T-TR
1. Available on request.
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Revision history
10
Table 32.
Date
Revision history
Document revision history
Revision 12 13 14 15 16 17 18 19 Document updating. Order codes has been updated and new template. DPAK mechanical data has been updated and add footprint data. Order codes has been updated. Added Table 1 in cover page. Modified: Table 31. Added: TO-220 mechanical data Figure 38 on page 40 , Figure 39 on page 41, and Table 23 on page 39. Modified: Table 31 on page 54. Added: Table 26: DPAK mechanical data on page 47., Table 27: Tape and reel DPAK mechanical data on page 48. Modified: Table 31 on page 54. Modified Table 1 on page 1 and Table 23 on page 39, added: Figure 38 on page 40 and Figure 39 on page 41, Figure 40 on page 42 and Figure 41 on page 42. Added notes Figure 38 on page 40. Modified Table 31 on page 54. Changes
21-Jun-2004 03-Aug-2006 19-Jan-2007 31-May-2007 29-Aug-2007 11-Dec-2007 06-Feb-2008 18-Mar-2008
26-Jan-2010 04-Mar-2010 08-Sep-2010
20 21 22
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