Original Creation Date: 07/12/95
Last Update Date: 04/29/99
Last Major Revision Date: 04/21/99
MJLM137-K REV 0A0 MICROCIRCUIT DATA SHEET
3-TERMINAL VOLTAGE REGULATOR, -37 VOLTS < VO < -1.25
VOLTS AT 1.5A
General Description
The LM137K is an adjustable 3-terminal negative voltage regulator capable of supplying in
excess of 1.5A over an output voltage range of -1.2V to -37V. This regulator is
exceptionally easy to apply, requiring only 2 external resistors to set the output voltage
and 1 output capacitor for frequency compensation. The circuit design has been optimized
for excellent regulation and low thermal transients. Futher, the LM137K features internal
current limiting, thermal shutdown and safe-area compensation, making it virtually
blowout-proof against overloads.
The LM137K serves a wide variety of applications including local on-card regulation,
programmable-output voltage regulation or precision current regulation. The LM137K is an
ideal complement to the LM117K adjustable positive regulator.
NS Part Numbers
JL137BYA
JL137SYA
Industry Part Number
LM137
Prime Die
LM137
Controlling Document
38510/11804,AMEND. 4
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)
o
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125
8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
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MICROCIRCUIT DATA SHEET
MJLM137-K REV 0A0
Features
- Output voltage adjustable from -1.2V to -37V
- 1.5A output current guaranteed, -55 C to +150 C
- Line regulation typically 0.01%/V
- Load regulation typically 0.3%
- Excellent thermal regulation, 0.002%/W
- 50 ppm/ C temperature coefficient
- Temperature-independent current limit
- Internal thermal overload protection
- Stantard 3-lead transistor package
- Output short circuit protected
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MICROCIRCUIT DATA SHEET
MJLM137-K REV 0A0
(Absolute Maximum Ratings)
(Note 1)
Power Dissipation
(Note 2) Internally Limited
Input-Output Voltage Differential 40V
Operating Junction Temperature -55 C to +150 C
Maximum Junction Temperature
(Note 2) 150 C
Maximum Power Dissipation 28 Watts(@ 25 C)
Minimum Input Voltage -41.25V
Storage Temperature -65 C to +150 C
Lead Temperature 300 C(Soldering, 10 seconds)
Thermal Resistance
ThetaJA 40 C/W(Still Air) 14 C/W(500LF/Min Air Flow)
4 C/WThetaJC
Package Weight 12750mg(Typical)
ESD Rating
(Note 3) 4000V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Rating indicate conditions for which the device is functional, but do not
guarantee specific performance limits. For guaranteed specifications and test
conditions, see the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed. Some performance characteristics may degrade
when the device is not operated under the listed test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is
dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to
ambient thermal resistance), and TA (ambient temperature). The maximum allowable
power dissipation at any temperature is Pdmax = (Tjmax - TA) /ThetaJA or the number
given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 100pF discharged through 1.5K Ohms
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MICROCIRCUIT DATA SHEET
MJLM137-K REV 0A0
Recommended Operating Conditions
Ta -55 C to +125 C
Input Voltage Range -41.25V to -4.25V
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MJLM137-K REV 0A0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Vout Output Voltage Vin = -4.25V, Il = 5mA -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vin = -4.25V, Il = 1.5A -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vin = -41.25V, Il = 5mA -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vin = -41.25V, Il = 200mA -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vrline Line Regulation -41.25V < Vin < -4.25, Il = 5mA -9 9 mV 1
-23 23 mV 2, 3
Vrload Load Regulation Vin = -6.25V, Il = 5mA to 1.5A -6 6 mV 1
-12 12 mV 2, 3
Vin = -41.25V, Il = 5mA to 200mA -6 6 mV 1
-12 12 mV 2, 3
Vrth Thermal
Regulation Vin = -14.6V, Il = 1.5A -5 5 mV 1
Iadj Adjust Pin
Current Vin = -4.25V, Il = 5mA 25 100 uA 1, 2,
3
Vin = -41.25V, Il = 5mA 25 100 uA 1, 2,
3
Delta
Iadj(line) Adjust Pin
Current Change
vs. Line Voltage
-41.25V < Vin < -4.25, Il = 5mA -5 5 uA 1, 2,
3
Delta
Iadj(load) Adjust Pin
Current Change
vs. Load Current
Vin = -6.25V, Il = 5mA to 1.5A -5 5 uA 1, 2,
3
Ios Output Short
Circuit Current Vin = -4.25V 1.5 3.5 A 1, 2,
3
Vin = -40V 0.2 1 A 1, 2,
3
Vout
(Recovery) Output Voltage
Recovery Vin = -4.25V -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vin = -40V -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
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MJLM137-K REV 0A0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Iq Minimum Load
Current Vin = -4.25V 0.2 3 mA 1, 2,
3
Vin = -14.25V 0.2 3 mA 1, 2,
3
Vin = -41.25V 1 5 mA 1, 2,
3
Vstart Voltage Start-up Vin = 4.25V, Il = 1.5A -1.275 -1.225 V 1
-1.3 -1.2 V 2, 3
Vout Output Voltage Vin = -6.25V, Il = 5mA (No Subgroup) 1 -1.3 -1.2 V
AC PARAMETERS
Delta
Vin/Delta
Vout
Ripple Rejection Vin = -6.25V, ei = 1Vrms at 2400Hz,
Il = 500mA 50 dB 4
Vno Output Noise
Voltage Vin = -6.25V, Il = 100mA 120 uVrms
Delta
Vout/Delta
Vin
Line Transient
Response Vin = -6.25V, Il = 100mA, Vpulse = -1V 80 mV/V 7
Delta
Vout/Delta
Il
Load Transient
Response Vin = -6.25V, Il = 100mA,
Delta Il = 400mA 260mV7
DC PARAMETERS: DRIFT VALUES
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: "Delta calculations performed on JAN S and QMLV devices at group B, subgroup 5 only".
Vout Output Voltage Vin = -41.25V, Il = 5mA -0.01 0.01 V 1
Vrline Line Regulation -41.25V < Vin < -4.25, Il = 5mA -4 4 mV 1
Iadj Adjust Pin
Current Vin = -41.25V, Il = 5mA -10 10 uA 1
Note 1: Tested at +125 C; correlated to 150 C.
Note 2: S/S limit of .15mV/mA is equivalent to 60mV.
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MICROCIRCUIT DATA SHEET
MJLM137-K REV 0A0
Graphics and Diagrams
GRAPHICS# DESCRIPTION
05191HRB4 METAL CAN (KA), TO-3, 2LD, LOW PROFILE (B/I CKT)
K02CRE METAL CAN (KA), TO-3, 2LD, LOW PROFILE (P/P DWG)
P000200A METAL CAN (KA), TO-3, 2 LD, LOW PROFILE (PINOUT)
See attached graphics following this page.
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N
MIL/AEROSPACE OPERATIONS
2900 SEMICONDUCTOR DRIVE
SANTA CLARA, CA 95050
VOUT
ADJUSTMENT
BOTTOM VIEW
LM137K, LM137HVK
2 - LEAD TO3
CONNECTION DIAGRAM
P000200A
CASE IS INPUT
MICROCIRCUIT DATA SHEET
MJLM137-K REV 0A0
Revision History
Rev ECN # Rel Date Originator Changes
0A0 M0003394 04/29/99 Rose Malone Update MDS from MJLM137-K, Rev. 0BL to Fully Released
MDS MJLM137-K, Rev. 0A0.
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