LM137 - 3-Terminal Adjustable Negative Regulator
Datasheet Packaging Samples & Pricing Application Notes Knowledge Base

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
  • 77 dB ripple rejection
  • Excellent rejection of thermal transients
  • 50 ppm/°C temperature coefficient
  • Temperature-independent current limit
  • Internal thermal overload protection
  • P+ Product Enhancement tested
  • Standard 3-lead transistor package
  • Output is short circuit protected

LM137 Series Packages and Power Capability

  RatedDesign
DevicePackagePowerLoad
  DissipationCurrent
LM137/337TO-3 (K)20W1.5A
 TO-39 (H)2W0.5A
LM337TO-220 (T)15W1.5A
LM337SOT-223 (MP)2W1A

General Description

The LM137/LM337 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of -1.5A over an output voltage range of -1.2V to -37V. More...


  Typical Application
click for larger image


ParametersValues
Output Current 1500 mA
Output Min -37 Volt
Input Min Voltage -40 Volt
Input Max Voltage -4.2 Volt
Adjustable Output Yes
On/Off Pin No
Error Flag No
RegType Linear Regulator
Temperature Min -55 deg C
Temperature Max 150 deg C
Output Max -1.2 Volt


Typical Performance

click for larger image


  Additional Resources
Application Notes


Connection Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM137/LM337 3-Terminal Adjustable Negative Regulators 836
Kbytes		 9-Nov-04 Download
LM137 Mil-Aero (DESC) Datasheet MDLM137-H 12 Kbytes   Download
LM137 Mil-Aero (DESC) Datasheet MDLM137-K 12 Kbytes   Download
LM137 Mil-Aero (JAN) Datasheet MJLM137-H 104 Kbytes   Download
LM137 Mil-Aero (JAN) Datasheet MJLM137-K 111 Kbytes   Download
LM137 Mil-Aero Datasheet MNLM137-K 110 Kbytes   Download
LM137 Mil-Aero Datasheet MNLM137-WG 126 Kbytes   Download
LM137 Mil-Aero Datasheet MNLM137-X 197 Kbytes   Download
LM137 Mil-Aero Datasheet MNLM137A-H 15 Kbytes   Download
LM137 Mil-Aero Datasheet MRLM137-K-RH 113 Kbytes   Download
LM137 Mil-Aero Datasheet MRLM137-X-RH 200 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM137HTO-393NOPB
STD		1
1		NA
NA		RoHS Download Full productionN/A
 
Buy Now 		250+$6.60box
of
500		NSZXYTTE# LM137HP+
6 weeks1000
LM137H MD8Unpackaged DieFull productionN/A
  CALLtray
of
N/A		-
6 weeks1000
LM137KG MD8Unpackaged DieFull productionN/A
  CALLtray
of
N/A		-
N/A2000
7703403XA
(LM137H-SMD)		TO-393RoHS Download Lifetime buyN/A
 50+$16.40tray
of
20		NS ZSSXXYYA Q
27014 7703403XA
8 weeks100
LM137H/883TO-393STD1NARoHS Download Full productionN/A
 
Buy Now 		50+$16.40tray
of
20		NS ZSSXXYYA
LM137H/883 Q
8 weeks500
LM137K/883TO-32STD1NARoHS Download Full productionN/A
 
Buy Now 		50+$34.00tray
of
50		NSZSSXXYYA
LM137K/883
Q
15 weeks500
JM38510/11803BXA
(JL137BXA)		TO-393RoHS Download Full productionN/A
 50+$20.60tray
of
20		NS ZSSXXYYA 27014 Q
JM38510/11803BXA
6 weeks100
JM38510/11803SXA
(JL137SXA)		TO-393RoHS Download Full productionN/A
  CALLtray
of
20		NS ZSSXXYYA
JM38510/11803SXA
16 weeks50
5962P9951701VXA
(LM137HPQMLV)		TO-393RoHS Download Full productionN/A
 
Buy Now 		 CALLtray
of
20		NSZSSXXYYA
9951701VXA LM137HPQV Q
16 weeks100
JM38510/11804SYA
(JL137SYA)		TO-32RoHS Download Full productionN/A
  CALLtray
of
50		NSZSSXXYYA
JM38510/
11804SYA
27014 Q
6 weeks50

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM137AH/883
LM137H/883
NATIONAL SEMICONDUCTOR
07 Jun 2005
LM137AK/883
NONE
NONE
07 Jun 2001
LM137H-MLS
NONE
NONE
08 Dec 1998
LM137H-MPR
NONE
NATIONAL SEMICONDUCTOR
16 Nov 2008
LM137H-SMD
LM137H/883
NATIONAL SEMICONDUCTOR
01 Dec 2009
LM137H MDS
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137H MW8
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137HVH-MLS
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137HVH-SMD
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137HVH MD8
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137HVH MW8
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137HVK-SMD
LM137HVK/883
NATIONAL SEMICONDUCTOR
05 Mar 2008
LM137HVK/883
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137K-SMD
JL137BYA
NATIONAL SEMICONDUCTOR
05 Mar 2008
LM137KG MDA
LM137HBK MD8
NATIONAL SEMICONDUCTOR
09 Dec 2005
LM137KG MWA
LM137HBK MD8
NATIONAL SEMICONDUCTOR
09 Dec 2005
LM137KPQMLV
JL137SYA
NATIONAL SEMICONDUCTOR
06 Dec 2005
LM137WG-QMLV
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137WGPQMLV
NONE
NATIONAL SEMICONDUCTOR
03 Dec 2008
LM137WG/883
LM137H/883
NATIONAL SEMICONDUCTOR
03 Dec 2008

General Description

The LM137/LM337 are adjustable 3-terminal negative voltage regulators capable of supplying in excess of -1.5A over an output voltage range of -1.2V to -37V. These regulators are 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. Further, the LM137 series features internal current limiting, thermal shutdown and safe-area compensation, making them virtually blowout-proof against overloads.

The LM137/LM337 serve a wide variety of applications including local on-card regulation, programmable-output voltage regulation or precision current regulation. The LM137/LM337 are ideal complements to the LM117/LM317 adjustable positive regulators.

More Application Notes

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[Information as of 8-Nov-2009]