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RH137 Negative Adjustable Regulator
DESCRIPTIO
ABSOLUTE
AXI U
RATI GS
The RH137 negative adjustable regulator will deliver up to 1.5A output current over an output voltage range of -1.2V to -32V. Every effort has been made to make these devices easy to use and difficult to damage. Internal current and power limiting coupled with true thermal limiting prevents device damage due to overloads or shorts, even if the regulator is not fastened to a heat sink. Maximum reliability is attained with Linear Technology's advanced processing techniques combined with a 100% burn-in in the thermal limit mode. This assures that all device protection circuits are working and eliminates field failures experienced with other regulators that receive only standard electrical testing. The wafer lots are processed to Linear Technology's inhouse Class S flow to yield circuits usable in stringent military applications.
Power Dissipation ............................... Internally Limited Input-to-Output Voltage Differential ......................... 40V Operating Junction Temperature Range ......................... - 55C to 150C Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
, LTC and LT are registered trademarks of Linear Technology Corporation.
BUR -I CIRCUIT
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW 1 ADJ 2 3 CASE IS INPUT
243
RH137 -40V VIN ADJ 2k OUTPUT
VOUT VIN
H PACKAGE 3-LEAD TO-39 METAL CAN
RH137 BI
BOTTOM VIEW VOUT 2 CASE IS VIN 1 ADJ K PACKAGE 2-LEAD TO-3 METAL CAN (STEEL)
U
U
W
WW
U
W
U
UU
1
RH137 TABLE 1: ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER VREF Reference Voltage CONDITIONS
VIN - VOUT = 5V, IOUT = 10mA
(Preirradiation) (Note 1)
TA = 25C TYP MAX - 1.275 - 1.300 0.02 25 0.5 0.02 60 SUB- - 55C T A 150C GROUP MIN TYP MAX 1 1 1 1 1 1 66 100 1 1 1 1 1 1 1 1 1 0.6 1 0.003 0.5 1.5 100 5 5 5 3 2,3 2,3 2,3 2,3 2,3 2,3 2,3 - 1.200 - 1.300 0.05 50 1 2,3 2,3 2,3 2,3 SUBGROUP
NOTES
MIN
UNITS V V %/ V mV % %/W dB dB A A A mA mA A A A A % % %
- 1.225 - 1.200 2 2 2
3V VIN - VOUT 40V, 10mA I OUT I MAX, P P MAX V OUT V IN V OUT I OUT Line Regulation Load Regulation Thermal Regulation Ripple Rejection 3V VIN - VOUT 40V 10mA I OUT I MAX, VOUT 5V 10mA I OUT I MAX, VOUT 5V 10ms Pulse VOUT = - 10V, f = 120Hz, CADJ = 0 VOUT = - 10V, f = 120Hz, CADJ = 10F IADJ I ADJ IMIN Adjust Pin Current Adjust Pin Current Change Minimum Load Current Current Limit 10mA I OUT I MAX 3V VIN - VOUT 40V
VIN - VOUT = 40V VIN - VOUT 10V VIN - VOUT 15V H Package
3
66
5 5 5 3
K Package
VIN - VOUT = 40V H Package
0.5 1.5 0.15 0.24 3 3
1.5 3.2 0.5 1.0
K Package V OUT Temp V OUT Time en JC Temperature Stability - 55C T J 125C Long Term Stability RMS Output Noise Thermal Resistance (Junction to Case) TA = 125C 10Hz f 10kHz H Package K Package 3 3
15 3
C/W C/W
TABLE 1A: ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER VREF CONDITIONS 10KRAD(Si) NOTES MIN MAX
(Postirradiation) (Note 4)
50KRAD(Si) MIN MAX 100KRAD(Si) MIN MAX 200KRAD(Si) MIN MAX UNITS
20KRAD(Si) MIN MAX
Reference Voltage VIN - VOUT 5V, IOUT = 10mA 3V VIN - VOUT 40V, 10mA IOUT IMAX, P PMAX
-1.225 -1.275 -1.225 -1.275 -1.225 -1.275 -1.225 -1.275 -1.22 -1.28 -1.2 2 2 2 -1.3 0.02 25 0.5 -1.2 -1.3 0.02 25 0.5 -1.2 -1.3 -1.2 0.02 25 0.5 -1.3 0.02 25 0.5 -1.2 -1.3 0.02 25 0.5
V V %/V mV %
V OUT V IN V OUT I OUT
Line Regulation Load Regulation
3V VIN - VOUT 40V, 10mA I OUT I MAX,
VOUT 5V
10mA I OUT I MAX, VOUT 5V
2
RH137 TABLE 1A: ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER IADJ I ADJ IMIN Adjust Pin Current Adjust Pin Current Change Minimum Load Current Current Limit H Package K Package 10mA I OUT I MAX 3V VIN - VOUT= 40V VIN - VOUT= 40V VIN - VOUT 10V VIN - VOUT 15V VIN - VOUT= 40V VIN - VOUT 15V VIN - VOUT= 40V 0.5 0.15 1.5 0.24 CONDITIONS 10KRAD(Si) NOTES MIN MAX 100 5 5 5 3 1.5 0.5 3.2 1 0.5 0.15 1.5 0.24
(Postirradiation) (Note 4)
50KRAD(Si) MIN MAX 100 5 5 5 3 0.5 0.15 1.5 0.24 1.5 0.5 3.2 1 0.5 0.15 1.5 0.24 100KRAD(Si) MIN MAX 100 5 5 5 3 1.5 0.5 3.2 1 0.5 0.15 1.5 0.24 200KRAD(Si) MIN MAX 100 5 5 5 3 1.5 0.5 3.2 1 UNITS A A A mA mA A A A A
20KRAD(Si) MIN MAX 100 5 5 5 3 1.5 0.5 3.2 1
Note 1: Unless otherwise specified, these specifications apply for VIN - VOUT= 5V; and IOUT = 0.1A for the H package (TO-39) and IOUT = 0.5A for the K package (TO-3) package. Although power dissipation is internally limited, these specifications are applicable for power dissipations of 2W for the TO-39 and 20W for the TO-3. IMAX is 0.2A for the TO-39 and 1.5A for the TO-3 package.
Note 2: Regulation is measured at a constant junction temperature using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 3: Guaranteed by design, characterization or correlation to other tested parameters. Note 4: TJ = 25C unless otherwise noted.
TABLE 2: ELECTRICAL TEST REQUIRE E TS
MIL-STD-883 TEST REQUIREMENTS Final Electrical Test Requirements (Method 5004) Group A Test Requirements (Method 5005) Group C and D End Point Electrical Parameters (Method 5005) * PDA Applies to subgroup 1. See PDA Test Notes. SUBGROUP 1*,2,3 1,2,3 1 PDA Test Notes The PDA is specified as 5% based on failures from group A, subgroup 1, tests after cooldown as the final electrical test in accordance with method 5004 of MIL-STD-883 Class B. The verified failures of group A, subgroup 1, after burn-in divided by the total number of devices submitted for burnin in that lot shall be used to determine the percent for the lot. Linear Technology Corporation reserves the right to test to tighter limits than those given.
TOTAL DOSE BIAS CIRCUIT
2k 1 RH137 ADJ OUTPUT VIN CASE -15V 2
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
UW
243
RH137 TDBC
3
RH137 TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage
1.28 1.27
REFERENCE VOLTAGE (V)
3.0
3V VIN - VOUT 40V 10mA IOUT IMAX
CURRENT LIMIT (A)
1.26 1.25 1.24 1.23 1.22
2.0 1.5 1.0 0.5 0 -0.5
ADJUST CURRENT (A)
1
10 100 TOTAL DOSE KRAD (Si)
Minimum Load Current
3.0
MINIMUM LOAD CURRENT (mA)
VIN - VOUT = 10V
2.5
DROPOUT VOLTAGE (V)
2.0 1.5 1.0 0.5 0
2.0 1.5 1.0 0.5 0
REGULATION (mV)
1
10 100 TOTAL DOSE KRAD (Si)
4
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977
UW
RH137 G01 RH137 G04
Current Limit
100 90
VIN - VOUT = 5V 2.5
Adjust Current
VIN - VOUT = 40V
80 70 60 50 40
VIN - VOUT= 40V
1000
1
10 100 TOTAL DOSE KRAD (Si)
1000
RH137 G02
1
10 100 TOTAL DOSE KRAD (Si)
1000
RH137 G03
Dropout Voltage
3.0 2.5 14 (VIN - VOUT) = 10V 12 10 8 6
Regulation
LOAD 4 2 0 LINE 1 10 100 TOTAL DOSE KRAD (Si) 1000
RH137 G06
1000
1
10 100 TOTAL DOSE KRAD (Si)
1000
RH137 G05
I.D. No. 66-10-0175 Rev. A 0896
LT/HP 0896 500 REV A * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1990

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