NEGATIVE ADJUSTABLE VOLTAGE REGULATOR LM137K adjustable 3-termina

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NEGATIVE ADJUSTABLE VOLTAGE REGULATOR LM137K adjustable 3-termina

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MICROCIRCUIT DATA SHEET MDLM137-K
NEGATIVE ADJUSTABLE VOLTAGE REGULATOR
LM137K adjustable 3-terminal negative voltage regulator capable supplying excess -1.5A over output voltage range -1.2V -37V. This regulator exceptionally easy apply, requiring only external resistors output voltage output capacitor frequency compensation. circuit design been optimized excellent regulation thermal transients. Further, LM137K features internal current limiting, thermal shutdown, safe-area compensation, making virtually blow-out proof against overloads. LM137K serves wide variety applications including local on-card regulation, programmable-output voltage regulation precision current regulation. LM137K ideal complement LM117K adjustable positive regulator.
Industry Part Number
LM137
Part Numbers
LM137K-SMD*
Prime
LM137
Controlling Document
7703403YA*
Processing
MIL-STD-883, Method 5004
Subgrp Description
Static tests Static tests Static tests Dynamic tests Dynamic tests Dynamic tests Functional tests Functional tests Functional tests Switching tests Switching tests Switching tests
Temp
+125 +125 +125 +125
Quality Conformance Inspection
MIL-STD-883, Method 5005
MDLM137-K
MICROCIRCUIT DATA SHEET
Features
Output voltage adjustable from -1.2V -37V. 1.5A output current guaranteed, +150 Line regulation typically 0.01%/V. Load regulation typically 0.3%. Excellent thermal regulation, 0.002%/W. ripple rejection. Excellent rejection thermal transients. ppm/ temperature coefficient. Temperature-independent current limit. Internal thermal overload protection. Standard 3-lead transistor package. Output short circuit protected.
MDLM137-K
MICROCIRCUIT DATA SHEET
(Absolute Maximum Ratings)
(Note Power Dissipation (Note Internally Limited Input-Output Voltage Differential Operating Ambient Temperature +125 Maximum Junction Temperature Storage Temperature +150 Lead Temperature (Soldering, seconds) Rating Volts Note Absolute Maximum Ratings indicate limits beyond which damage device occur. Operating Ratings indicate conditions which device functional, guarantee specific performance limits. guaranteed specifications test conditions, Electrical Characteristics. guaranteed specifications apply only test conditions listed. Some performance characteristics degrade when device operated under listed test conditions. maximum power dissipation must derated elevated temperatures dictated Tjmax (maximum junction temperature), ThetaJA (package junction ambient thermal resistance), (ambient temperature). maximum allowable power dissipation temperature Pdmax (Tjmax TA)/ThetaJA number given Absolute Maximum Ratings, whichever lower.
Note
MDLM137-K
MICROCIRCUIT DATA SHEET
Electrical Characteristics
PARAMETERS
(The following conditions apply following parameters, unless otherwise specified.) SYMBOL Vref PARAMETER Reference Voltage Vdiff CONDITIONS NOTES PINNAME UNIT SUBGROUPS
-1.275 -1.225 -1.3 -1.2
Vdiff
-1.275 -1.225 -1.3 -1.2 0.24
Rline
Line Regulation
Vdiff Vdiff
Rload
Load Regulation
Vdiff 1.5A Vdiff 12V, 1.5A Vdiff 40V, 200mA Vdiff 40V, 100mA
Vrth Iadj
Thermal Regulation Adjustment Current
-14.6V, 1.5A, 20W, 10mS Vdiff Vdiff
Delta Iadj(line) Delta Iadj(load) Ilmin
Adjustment Current Change Adjustment Current Change Minimum Load
Vdiff Vdiff 1.5A Vdiff Vout -1.4V (forced) Vdiff 10V, Vout -1.4V (forced) Vdiff 40V, Vout -1.4V (forced)
Current Limit
Vdiff Vdiff
PARAMETERS
(The following conditions apply following parameters, unless otherwise specified.) Ripple Rejection Note Note 120Hz, Cadj 10uF, Vout Vref
Group sample only, test temps. Bench test, refer (SG)RPI-3-362.

NEGATIVE ADJUSTABLE VOLTAGE REGULATOR LM137K adjustable 3-termina

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