LM237, LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047G – NOVEMBER 1981 – REVISED SEPTEMBER 2003
LM237, LM337 . . . KC (TO-220) PACKAGE
(TOP VIEW)
Output Voltage Range Adjustable From
–1.2 V to –37 V
OUTPUT
Output Current Capability of 1.5 A Max
INPUT
ADJUSTMENT
Input Regulation Typically 0.01% Per
Input-Voltage Change
LM337 . . . KTE OR KTP PACKAGE
(TOP VIEW)
Output Regulation Typically 0.3%
Peak Output Current Constant Over
Temperature Range of Regulator
OUTPUT
INPUT
Ripple Rejection Typically 77 dB
Direct Replacement for Industry-Standard
LM237 and LM337
ADJUSTMENT
description/ordering information
The LM237 and LM337 are adjustable 3-terminal negative-voltage regulators capable of supplying in excess
of –1.5 A over an output voltage range of –1.2 V to –37 V. They are exceptionally easy to use, requiring only
two external resistors to set the output voltage and one output capacitor for frequency compensation. The
current design has been optimized for excellent regulation and low thermal transients. In addition, the LM237
and LM337 feature internal current limiting, thermal shutdown, and safe-area compensation, making them
virtually immune to failure by overloads.
The LM237 and LM337 serve a wide variety of applications, including local on-card regulation, programmable
output-voltage regulation, and precision current regulation.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
J
–25°C to 150°C
0°C to 125°C
TO-220 (KC)
Tube of 50
LM237KC
LM237
PowerFLEX (KTE)
PowerFLEX (KTP)
TO-220 (KC)
Reel of 2000
Reel of 3000
Tube of 50
LM337KTER
LM337KTPR
LM337KC
LM337
L337
LM337
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available
at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerFLEX is a trademark of Texas Instruments.
Copyright 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265