LM123, LM323-N, LM323A
www.ti.com SNVS757B – MAY 2004 – REVISED NOVEMBER 2004 LM123/LM323A/LM323-N 3-Amp, 5-Volt Positive Regulator
Check for Samples: LM123, LM323-N, LM323A FEATURES The 3 amp regulator is virtually blowout proof.
Current limiting, power limiting, and thermal shutdown
provide the same high level of reliability obtained with
these techniques in the LM109 1 amp regulator. 1 2 Ensured 1% Initial Accuracy (A Version)
3 Amp Output Current
Internal Current and Thermal Limiting
0.01О© Typical Output Impedance
7.5V Minimum Input Voltage
30W Power Dissipation
P+ Product Enhancement tested No external components are required for operation of
the LM123. If the device is more than 4 inches from
the filter capacitor, however, a 1 ОјF solid tantalum
capacitor should be used on the input. A 0.1 ОјF or
larger capacitor may be used on the output to reduce
load transient spikes created by fast switching digital
logic, or to swamp out stray load capacitance. DESCRIPTION
The LM123 is a three-terminal positive regulator with
a preset 5V output and a load driving capability of 3
amps. New circuit design and processing techniques
are used to provide the high output current without
sacrificing the regulation characteristics of lower …
