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Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR General Description
The AZ317 is an adjustable three-terminal positive voltage regulator with a very low dropout of 1.2V at 1A output current. Using 2 external resistors, the AZ317 can provide an adjustable output voltage down to 1.25V. The AZ317 includes a circuit of trimmed bandgap reference to assure output voltage accuracy to be within 1%. It also provides current limiting and thermal shutdown. The current limit is trimmed to ensure specified output current and controlled short-circuit current. The On-chip thermal limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The AZ317 is available in the standard SOT-223, TO220-3, TO-252-2 (1) and TO-263-3 power packages.
AZ317
Features
* * * * * * * Typical 1% Output Voltage Tolerance Typical 0.01%/V Line Regulation Typical 0.2% Load Regulation Very Low Dropout Voltage: 1.2V at 1A Output Current Trimmed Current Limit On-chip Thermal Protection Operation Junction Temperature: 0 to 125oC
Applications
* * * * * * * PC Motherboard LCD Monitor Graphic Card DVD Player Network Interface Card/Switch Telecom Equipment Printer and other Peripheral Equipment
SOT-223
TO-220-3
TO-252-2 (1)
TO-263-3
Figure 1. Package Types of AZ317
Mar. 2007 Rev. 1. 3 1
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Pin Configuration
H Package (SOT-223)
3 VOUT 2 1 INPUT OUTPUT ADJ VOUT
AZ317
T Package (TO-220-3)
3 2 1
INPUT OUTPUT ADJ
D Package (TO-252-2(1))
3 VOUT 2 1 INPUT OUTPUT ADJ
S Package (TO-263-3)
3 2 1
INPUT OUTPUT ADJ
Figure 2. Pin Configuration of AZ317 (Top View)
Functional Block Diagram
3
INPUT
Thermal Shutdown
Current Limiter _
+
+
2
OUTPUT
1
ADJ
Figure 3. Functional Block Diagram of AZ317 Mar. 2007 Rev. 1. 3 2 BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Ordering Information AZ317
AZ317 Circuit Type
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Package
H: SOT-223 T: TO-220-3 D: TO-252-2 (1) S: TO-263-3
Blank: Tube
Package SOT-223 TO-220-3 TO-252-2 (1)
Temperature Range 0 to 125oC 0 to 125oC
Part Number Tin Lead AZ317HTR AZ317T AZ317D AZ317DTR AZ317S AZ317STR Lead Free AZ317HTR-E1 AZ317T-E1 AZ317D-E1 AZ317DTR-E1 AZ317S-E1 AZ317STR-E1 Tin Lead 317H AZ317T AZ317D AZ317D AZ317S AZ317S
Marking ID Lead Free EH31A AZ317T-E1 AZ317D-E1 AZ317D-E1 AZ317S-E1 AZ317S-E1
Packing Type Tape & Reel Tube Tube Tape & Reel Tube Tape & Reel
0 to 125oC 0 to 125oC
TO-263-3
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 3 3
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Absolute Maximum Ratings (Note 1)
Parameter Input Voltage Maximum Junction Temperature Storage Temperature Lead Temperature (Soldering, 10sec) ESD (Human Body Model) Symbol VIN TJ TS TLEAD ESD -65 Min Max 20 150 150 300 4000 Unit V
o
AZ317
C C C
o o
V
Note1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Input Voltage Operating Junction Temperature Range Symbol VIN TJ Min VOUT+2 0 Max 15 125 Unit V
o
C
Mar. 2007 Rev. 1. 3 4
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Electrical Characteristics
(Typicals and limits apply for TJ =25oC, P Maximum Power Dissipation unless otherwise specified.)(Note 2)
Parameter Reference Voltage Line Regulation Load Regulation Thermal Regulation Dropout Voltage Current Limit Adjust Pin Current Adjust Pin Current Change Minimum Load Current Ripple Rejection Temperature Stability Long -Term Stability RMS Output Noise (% of VOUT) Thermal Resistance, Junction to Case TA =125oC, 1000hrs 1.4V(VIN-VOUT) 10V, 10mA IOUT 1A 3V (VIN-VOUT) 15V f =120Hz, COUT =1F Tantalum, (VIN-VOUT) = 3V, IOUT =1A 60 V ILIMIT Symbol VREF SV Si Conditions 10mAIOUT1A, 3V (VIN-VOUT) 10V IOUT 20mA, 3VVIN-VOUT10V VIN -VOUT = 2V, 10mAIOUT1A 20ms Pulse IOUT = 1A (VIN-VOUT) = 2V 1.2 Min 1.20 Typ 1.25 0.01 0.2 0.04 1.2 1.5 50 0.2 3.5 75 1 0.3 0.003 15 10 4.5 4 150 25 Max 1.30 0.04 0.4 0.07 1.3 1.8 100 5 10 Unit V %/V % %/W V A A A mA dB % % %
oC/W
AZ317
TA=25oC, 10Hz f 10kHz SOT-223 TO-252 TO-220 TO-263 Junction Temperature
Thermal Shutdown Thermal Shutdown Hysteresis
oC oC
Note 2: Maximum Power Dissipation is Package Type and Case Temperature dependent. Please see Figure 12.
Mar. 2007 Rev. 1. 3 5
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Typical Performance Characteristics AZ317
1.2
0.8
1.1
Output Voltage Deviation (%)
TA=0 C Dropout Voltage (V)
1.0
o
0.6
VOUT=3.3V
0.4
TA=25 C
0.9
o
TA=120 C
0.8
o
0.2
0.7
0.0
0.6
0.5 0.2 0.4 0.6 0.8 1.0
-0.2 0 20 40 60 80
o
100
120
Output Current (A)
Ambient Temperature ( C)
Figure 5. Dropout Voltage vs. Output Current
Figure 6. Load Regulation vs. Temperature
1.260 1.255
3.40
Reference Voltage (V)
1.250 1.245 1.240 1.235 1.230 1.225 1.220
VOUT=3.3V
Output Voltage (V)
3.35
VOUT=3.3V IOUT=30mA
IOUT=30mA
3.30
3.25
3.20
3.15
1.215 1.210 0 25 50 75
o
100
125
3.10 0 25 50 75
o
100
125
Ambient Temparature ( C)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Temperature
Figure 8. Output Voltage vs. Temperature
Mar. 2007 Rev. 1. 3 6
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Typical Performance Characteristics (Continued) AZ317
5
100 90
Minimum Load Current (mA)
4
VOUT=3.3V IOUT=30mA
80
Adjust Pin Current ( A)
125
70 60 50 40 30 20 10
3
2
VOUT=3.3V
1
0 0 25 50 75
o
100
0 0 25 50 75
o
100
125
Ambient Temperature ( C)
Ambient Temperature( C)
Figure 9. Minimum Load Current vs. Temperature
Figure 10. Adjust Pin Current vs. Temperature
2.00
10.0
Short-Circuit Current (A)
1.75
7.5
1.50
Power (W)
5.0
SOT- 223
1.25
2.5
1.00 0 25 50 75
o
100
125
0.0 25
50
75
100
o
125
Junction Temperature ( C)
Case Temperature ( C)
Figure 11. Short-Circuit Current vs. Temperature
Figure 12. Maximum Power Dissipation
Mar. 2007 Rev. 1. 3 7
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Typical Performance Characteristics (Continued)
Line_transient_response VIN=4.8V, VOUT=3.33V, CIN=1 COUT
AZ317
70
VIN=8.3V Ripple Rejection (dB)
60
VOUT=3.3V
VOUT
50
VIN=5.8V
40
VIN=4.8V
30
20 10
100
1k
10k
100k
Frequency (Hz)
Figure 13. Ripple Rejection vs. Frequency
Figure 14. Line Transient Response
Line_transient_response VIN=4.8V, VOUT=3.33V, CIN=COUT preload=0.1A
VOUT
IOUT=0.5A
IOUT=0.1A
Figure 15. Load Transient Response
Mar. 2007 Rev. 1. 3 8
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Typical Application AZ317
AZ317
VIN + CIN 0.1F
*
INPUT ADJ
OUTPUT
R1 240
VOUT + ** CO 1.0F
R2
* = CIN is required if the regulator is located near power supply filter. **= CO is needed for stability and it improves transient response. VOUT = VREF x (1+R2/R1) + IADJ x R2 Since IADJ is controlled to less than 100A, the error associated with this term is negligible in most applications. Figure 4. Typical Application of AZ317
Mar. 2007 Rev. 1. 3 9
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Mechanical Dimensions SOT-223 Unit: mm(inch) AZ317
6.300(0.248) 6.700(0.264) 2.900(0.114) 3.100(0.122) 0.900(0.035) MIN 6.700(0.264) 7.300(0.287)
) 0.250(0.010 14) 0.350(0.0
3.300(0.130)
3.700(0.146)
0.250(0.010)
1.750(0.069) TYP 2.300(0.091) TYP 4.500(0.177) 4.700(0.185) 0.610(0.024) 0.810(0.032) 0 10
0.020(0.001) 0.100(0.004)
1.500(0.059) 1.700(0.067)
1.520(0.060) 1.800(0.071)
Mar. 2007 Rev. 1. 3 10
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Mechanical Dimensions (Continued) TO-220-3 Unit: mm(inch) AZ317
9.660(0.380) 10.660(0.420) 3.560(0.140) 4.060(0.160)
2.580(0.102) 3.380(0.133)
0.550(0.022) 1.350(0.053)
1.850(0.073)
0.200(0.008)
14.230(0.560) 16.510(0.650)
7
1.500(0.059)
8.520(0.335) 9.520(0.375)
27.880(1.098) 30.280(1.192)
3.560(0.140) 4.820(0.190) 2.080(0.082) 2.880(0.113)
7
3
1.160(0.046) 1.760(0.069)
0.381(0.015)
60 0.813(0.032)
8.763(0.345)
60
0.381(0.015) 2.540(0.100) 2.540(0.100)
0.356(0.014) 0.406(0.016)
Mar. 2007 Rev. 1. 3 11
BCD Semiconductor Manufacturing Limited
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Mechanical Dimensions (Continued) TO-252-2(1) Unit: mm(inch) AZ317
1.350(0.053) 1.650(0.065)
6.350(0.250) 6.650(0.262) 5.200(0.205) 5.400(0.213) 0.430(0.017) 0.580(0.023)
2.200(0.087) 2.400(0.094)
4.300(0.169) 5.400(0.212)
0.600(0.024) 0.900(0.035)
9.500(0.374) 9.900(0.390)
0.000(0.000) 0.127(0.005) 5 0.700(0.028) 0.900(0.035) 0.500(0.020) 0.700(0.028) 4.500(0.177) 4.700(0.165) 5
5.400(0.213) 5.700(0.224)
1.400(0.055) 1.780(0.070)
0.430(0.017) 0.580(0.023)
Mar. 2007 Rev. 1. 3 12
BCD Semiconductor Manufacturing Limited
2.550(0.100) 2.900(0.114)
2.300TYP
3 4
3.800REF(0.150REF)
4.800(0.189) 6.500(0.256)
8
Data Sheet 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Mechanical Dimensions (Continued) TO-263-3 Unit: mm(inch) AZ317
4.070(0.160) 4.820(0.190)
3
9.650(0.380) 10.290(0.405) 8.840(0.348)
70
1.270(0.050) 1.390(0.055)
1.150(0.045) 1.390(0.055) 7
7.420(0.292)
8.640(0.340) 9.650(0.380)
0.020(0.001) 0.250(0.010)
14.760(0.581) 15.740(0.620) 2.390(0.094) 2.690(0.106)
1.150(0.045) 1.390(0.055) 0.510(0.020) 0.990(0.039) 2.540(0.100) 2.540(0.100)
3
2.640(0.104) 2.700(0.106) 0.360(0.014) 0.400(0.016) 7 2.200(0.087)
5.600(0.220)
7.980(0.314)
2 8
0.380(0.015) 2.540(0.100) 0 6 2.540(0.100)
Mar. 2007 Rev. 1. 3 13
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others.
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REGIONAL SALES OFFICE
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