February 2008 Rev 4 1/15
15
LM323
Three-terminal 3 A adjustable voltage regulators
Features
■ Output current: 3 A
■ Internal current and thermal limiting
■ Typical output impedance: 0.01 W
■ Minimum input voltage: 7.5 V
■ Power dissipation: 30 W
Description
The LM323 are three-terminal positive voltage
regulators with a preset 5 V output and a load
driving capability of 3 A. New circuit design and
processing techniques are used to provide the
high output current without sacrificing the
regulation characteristics of lower current devices.
The 3 A regulator is virtually blowout proof.
Current limiting, power limiting and thermal shut-
down provide the same high level of reliability
obtained with these techniques in the LM209, 1 A
regulator. An overall worst case specification for
the combined effects of input voltage, load
current, ambient temperature, and power
dissipation ensure that the LM323 will perform
satisfactorily as a system element.
TO-220TO-3
Table 1. Device summary
Order codes
Temperature range
TO-220 TO-3
LM323T LM323K 0°C to 125°C
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