LM333 Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – 3-Ampere Adjustable Negative Regulator

December 2000
LM333
3-Ampere Adjustable Negative Regulator
General Description
The LM333 is an adjustable 3-terminal negative voltage
regulator capable of supplying in excess of −3.0A over an
output voltage range of −1.2V to −32V. This regulator is
exceptionally easy to apply, requiring only 2 external resis-
tors to set the output voltage and 1 output capacitor for
frequency compensation. The circuit design has been opti-
mized for excellent regulation and low thermal transients.
Further, the LM333 features internal current limiting, thermal
shutdown and safe-area compensation, making them sub-
stantially immune to failure from overloads.
The LM333 serves a wide variety of applications including
local on-card regulation, programmable-output voltage regu-
lation or precision current regulation. The LM333 is an ideal
complement to the LM150/LM350 adjustable positive regu-
lators.
Features
n Output voltage adjustable from −1.2V to −32V
n 3.0A output current guaranteed, −55˚C to +150˚C
n Line regulation typically 0.01%/V
n Load regulation typically 0.2%
n Excellent rejection of thermal transients
n 50 ppm/˚C temperature coefficient
n Temperature-independent current limit
n Internal thermal overload protection
n Standard 3-lead transistor package
n Output is short circuit protected
Connection Diagram
TO-3
Metal Can Package
Typical Application
DS009065-1
Bottom View
Steel TO-3 Metal Can Package (K STEEL)
Order Number LM333K STEEL
See NS Package Number K02A
−5.2V Regulator with Electronic Shutdown
© 2000 National Semiconductor Corporation DS009065
DS009065-6
www.national.com