3-TERMINAL ADJUSTABLE REGULATORS
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SLVS047J – NOVEMBER 1981 – REVISED MAY 2007
FEATURES
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Output Voltage Range Adjustable From
–1.2 V to –37 V
Output Current Capability of 1.5 A Max
Input Regulation Typically 0.01% Per
Input-Voltage Change
Output Regulation Typically 0.3%
LM237, LM337...KC (TO-220) PACKAGE
(TOP VIEW)
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Peak Output Current Constant Over
Temperature Range of Regulator
Ripple Rejection Typically 77 dB
Direct Replacement for Industry-Standard
LM237 and LM337
LM337...KCS (TO-220) PACKAGE
(TOP VIEW)
INPUT
INPUT
OUTPUT
INPUT
ADJUSTMENT
OUTPUT
INPUT
ADJUSTMENT
LM337...KTE, KTP, OR KVU PACKAGE
(TOP VIEW)
LM337...KTT
(TO-263) PACKAGE
(TOP VIEW)
INPUT
INPUT
OUTPUT
INPUT
ADJUSTMENT
OUTPUT
INPUT
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
T
J
–25°C to 150°C
TO-220 – KC
PowerFLEX™ – KTE
PowerFLEX – KTP
0°C to 125°C
TO-220 – KC
TO-220 – KCS
TO-252 – KVU
TO-263 – KTT
(1)
PACKAGE
(1)
Tube of 50
Reel of 2000
Reel of 3000
Tube of 50
Tube of 50
Reel of 2500
Reel of 500
ORDERABLE PART NUMBER
LM237KC
LM337KTER
LM337KTPR
LM337KC
LM337KCSE3
LM337KVURG3
LM337KTTR
TOP-SIDE MARKING
LM237
LM337
L337
LM337
LM337
LM337
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1981–2007, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
