Original Creation Date: 04/30/99
Last Update Date: 07/19/00
Last Major Revision Date: 07/05/00
MRLM137-K-RH REV 1A0 MICROCIRCUIT DATA SHEET
3-TERMINAL VOLTAGE REGULATOR, -37 VOLTS < VO < -1.25
VOLTS AT 1.5A GUARANTEED TO 30K RAD(Si) TESTED TO
MIL-STD-883, METHOD 1019.5, CONDITION A
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
LM137KPQML
LM137KPQMLV
Industry Part Number
LM137
Prime Die
LM137
Controlling Document
SEE FEATURES SECTION
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
MRLM137-K-RH REV 1A0
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
- CONTROLLING DOCUMENTS
LM137KPQML 5962P9951702QYA
LM137KPQMLV 5962P9951702VYA
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MICROCIRCUIT DATA SHEET
MRLM137-K-RH REV 1A0
(Absolute Maximum Ratings)
(Note 1)
Power Dissipation Internally Limited
Input-Output Voltage Differential 40V
Operating Junction Temperature -55 C < Ta < +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 < Ta < +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
Recommended Operating Conditions
Ta -55 C < Ta < +125 C
Input Voltage Range -41.25V to -4.25V
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MRLM137-K-RH REV 1A0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS: (SEE NOTE 3)
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Vout Output Voltage Vin = -4.25V, Il = 5mA 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vin = -4.25V, Il = 1.5A 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vin = -41.25V, Il = 5mA 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vin = -41.25V, Il = 200mA 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vrline Line Regulation -41.25V < Vin < -4.25, Il = 5mA 3 -9 9 mV 1
3 -23 23 mV 2, 3
Vrload Load Regulation Vin = -6.25V, Il = 5mA to 1.5A 3 -6 6 mV 1
3 -12 12 mV 2, 3
Vin = -41.25V, Il = 5mA to 200mA 3 -6 6 mV 1
3 -12 12 mV 2, 3
Vrth Thermal
Regulation Vin = -14.6V, Il = 1.5A 3 -5 5 mV 1
Iadj Adjust Pin
Current Vin = -4.25V, Il = 5mA 3 25 100 uA 1, 2,
3
Vin = -41.25V, Il = 5mA 3 25 100 uA 1, 2,
3
Delta
Iadj(line) Adjust Pin
Current Change
vs. Line Voltage
-41.25V < Vin < -4.25, Il = 5mA 3 -5 5 uA 1, 2,
3
Delta
Iadj(load) Adjust Pin
Current Change
vs. Load Current
Vin = -6.25V, Il = 5mA to 1.5A 3 -5 5 uA 1, 2,
3
Ios Output Short
Circuit Current Vin = -4.25V 3 1.5 3.5 A 1, 2,
3
Vin = -40V 3 0.2 1 A 1, 2,
3
Vout
(Recovery) Output Voltage
Recovery Vin = -4.25V 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vin = -40V 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
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MRLM137-K-RH REV 1A0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS: (SEE NOTE 3) (Continued)
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
Iq Minimum Load
Current Vin = -4.25V 3 0.2 3 mA 1, 2,
3
Vin = -14.25V 3 0.2 3 mA 1, 2,
3
Vin = -41.25V 3 1 5 mA 1, 2,
3
Vstart Voltage Start-up Vin = 4.25V, Il = 1.5A 3 -1.275 -1.225 V 1
3 -1.3 -1.2 V 2, 3
Vout Output Voltage Vin = -6.25V, Il = 5mA 1, 3 -1.3 -1.2 V 2
AC PARAMETERS: (SEE NOTE 3)
Delta
Vin/Delta
Vout
Ripple Rejection Vin = -6.25V, ei = 1Vrms at 2400Hz,
Il = 500mA 350 dB9
Vno Output Noise
Voltage Vin = -6.25V, Il = 100mA 3 120 uVrms 9
Delta
Vout/Delta
Vin
Line Transient
Response Vin = -6.25V, Il = 100mA, Vpulse = -1V 3 80 mV/V 9
Delta
Vout/Delta
Il
Load Transient
Response Vin = -6.25V, Il = 100mA,
Delta Il = 400mA 2, 3 60 mV 9
DC PARAMETERS: DRIFT VALUES (See NOTE 3)
(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 = -4.25V, Il = 5mA 3 -0.01 0.01 V 1
Vin = -4.25V, Il = 1.5mA 3 -0.01 0.01 V 1
Vin = -41.25V, Il = 5mA 3 -0.01 0.01 V 1
Vin = -41.25V, Il = 200mA 3 -0.01 0.01 V 1
Vrline Line Regulation Vin = -41.25V to -4.25, Il = 5mA 3 -4 4 mV 1
Iadj Adjust Pin
Current Vin = -4.25V, Il = 5mA 3 -10 10 uA 1
Vin = -41.25V, Il = 5mA 3 -10 10 uA 1
DC PARAMETERS: POST RADIATION LIMITS +25 C (See NOTE 3)
Delta Iadj
(line) Adjust Pin
Current Change
vs. Line Voltage
-41.25V < Vin < -4.25V, Il = 5mA 3 -20 20 uA 1
Vrload Load Regulation -6.25V, 5mA to 1.5A 3 -7.5 7.5 mV 1
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MRLM137-K-RH REV 1A0 MICROCIRCUIT DATA SHEET
Note 1: Tested at +125 C; correlated to 150 C.
Note 2: Limit of 0.15mV/mA is equivalent to 60mV.
Note 3: Pre and post irradiation limits are identical to those listed under AC and DC
electrical characteristics except as listed in the Post Radiation Limits Table. These
parts may be dose rate sensitive in a space environment and demonstrate enhanced low
dose rate effect. Radiation end point limits for the noted parameters are guaranteed
only for the conditions as specified in MIL-STD-883, Method 1019.5, Condition A.
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MICROCIRCUIT DATA SHEET
MRLM137-K-RH REV 1A0
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
MRLM137-K-RH REV 1A0
Revision History
Rev ECN # Rel Date Originator Changes
0A0 M0003416 07/19/00 Rose Malone Initial MDS Release: MRLM137-K-RH, Rev. 0A0 - Rad Hard
Data Sheet.
1A0 M0003735 07/19/00 Rose Malone Update MDS: MRLM137-K-RH, Rev. 0A0 to MRLM137-K-RH,
Rev. 1A0. Changes made in Absolute and Recommended
Section, Post Radiaton Section, Delta Iadj Parameter
from -10uA Min, 10uV Max to -20uA Min, 20uA Max. Added
Vrload parameter in Post Radiaton Section.
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