SNVS778D – MAY 1999 – REVISED APRIL 2013
LM137/LM337-N 3-Terminal Adjustable Negative Regulators
Check for Samples:
1
FEATURES
Output Voltage Adjustable from
−1.2V
to
−37V
1.5A Output Current Specified,
−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
DESCRIPTION
The LM137/LM337-N 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-N serve a wide variety of
applications including local on-card regulation,
programmable-output voltage regulation or precision
current regulation. The LM137/LM337-N are ideal
complements to the LM117/LM317 adjustable
positive regulators.
Table 1. LM137 Series Packages and Power
Capability
Device
Package
Rated Power
Dissipation
20W
2W
15W
2W
Design
Load
Current
1.5A
0.5A
1.5A
1A
•
•
2
•
•
•
•
•
•
•
•
•
•
•
LM137/337-N
LM337-N
LM337-N
TO-3 (K)
TO (NDT)
TO-220 (NDE)
SOT-223 (DCY)
1
2
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.
All trademarks are the property of their respective owners.
Copyright © 1999–2013, Texas Instruments Incorporated
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.
TI [ TEXAS INSTRUMENTS ]
