LM333 3-Ampere Adjustable Negative Regulators
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 鈭?.0A over an
output voltage range of 鈭?.2V to 鈭?2V. 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
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Output voltage adjustable from 鈭?.2V to 鈭?2V
3.0A output current guaranteed, 鈭?5藲C to +150藲C
Line regulation typically 0.01%/V
Load regulation typically 0.2%
Excellent rejection of thermal transients
50 ppm/藲C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
Standard 3-lead transistor package
Output is short circuit protected
Connection Diagram
TO-3
Metal Can Package
DS009065-1
Bottom View
Steel TO-3 Metal Can Package (K STEEL)
Order Number LM333K STEEL
See NS Package Number K02A
Typical Application
鈭?.2V Regulator with Electronic Shutdown
DS009065-6
漏 2000 National Semiconductor Corporation
DS009065
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