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ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - LDO voltage regulator Negative, adjustable TO 220 3
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FEATURES
LM337...KTE, KTP, OR KVU PACKAGE
(TOP VIEW)
OUTPUT
INPUT
ADJUSTMENT
INPUT
INPUT
LM337...KTT (TO-263) PACKAGE
(TOP VIEW)
OUTPUT
INPUT
ADJUSTMENT
LM237, LM337...KC (TO-220) PACKAGE
(TOP VIEW)
INPUT
OUTPUT
ADJUSTMENT
INPUT
OUTPUT
LM337...KCS (TO-220) PACKAGE
(TOP VIEW)
ADJUSTMENT
INPUT
INPUT
DESCRIPTION/ORDERING INFORMATION
LM237 , LM337
3-TERMINAL ADJUSTABLE REGULATORS
SLVS047K – NOVEMBER 1981 – REVISED NOVEMBER 2007
www.ti.com
2
• Output Voltage Range Adjustable From • Peak Output Current Constant Over
– 1.2 V to – 37 V Temperature Range of Regulator
• Output Current Capability of 1.5 A Max • Ripple Rejection Typically 77 dB
• Input Regulation Typically 0.01% Per • Direct Replacement for Industry-Standard
Input-Voltage Change LM237 and LM337
• Output Regulation Typically 0.3%
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
PACKAGE
(1)
ORDERABLE PART NUMBER TOP-SIDE MARKING
– 25 ° C to 150 ° C TO-220 – KC Tube of 50 LM237KC LM237
PowerFLEX™ – KTE Reel of 2000 LM337KTER LM337
PowerFLEX – KTP Reel of 3000 LM337KTPR L337
TO-220 – KC Tube of 50 LM337KC LM337
0 ° C to 125 ° C
TO-220 – KCS Tube of 50 LM337KCSE3 LM337
TO-252 – KVU Reel of 2500 LM337KVURG3 LM337
TO-263 – KTT Reel of 500 LM337KTTR LM337
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
1
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.
2 PowerFLEX is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 1981 – 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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