LM323K STEEL/NOPB

The LM123 is a three-terminal positive regulator with effects of input voltage, load currents, ambient
a preset 5V output and a load driving capability of 3 temperature, and power dissipation ensure that the
amps. New circuit design and processing techniques LM123 will perform satisfactorily as a system
are used to provide the high output current without element.
sacrificing the regulation characteristics of lower
current devices. For applications requiring other voltages, see LM150
series adjustable regulator data sheet.
The LM323A offers improved precision over the
standard LM323-N. Parameters with tightened Operation is specified over the junction temperature
specifications include output voltage tolerance, line range −55°C to 150°C for LM123, −40°C to 125°C
regulation, and load regulation.

The 3 amp regulator is virtually blowout proof.
Current limiting, power limiting, and thermal shutdown
2• Ensured 1% Initial Accuracy (A Version) provide the same high level of reliability obtained with
• 3 Amp Output Current these techniques in the LM109 1 amp regulator.
• Internal Current and Thermal Limiting No external components are required for operation of
• 0.01Ω Typical Output Impedance the LM123. If the device is more than 4 inches from
• 7.5V Minimum Input Voltage the filter capacitor, however, a 1 μF solid tantalum
capacitor should be used on the input. A 0.1 μF or
• 30W Power Dissipation larger capacitor may be used on the output to reduce
• P
Product Enhancement tested load transient spikes created by fast switching digital
logic, or to swamp out stray load capacitance.
DESCRIPTION An overall worst case specification for the combined
The LM123 is a three-terminal positive regulator with effects of input voltage, load currents, ambient
a preset 5V output and a load driving capability of 3 temperature, and power dissipation ensure that the
amps. New circuit design and processing techniques LM123 will perform satisfactorily as a system
are used to provide the high output current without element.
sacrificing the regulation characteristics of lower
current devices. For applications requiring other voltages, see LM150
series adjustable regulator data sheet.
The LM323A offers improved precision over the
standard LM323-N. Parameters with tightened Operation is specified over the junction temperature
specifications include output voltage tolerance, line range −55°C to 150°C for LM123, −40°C to 125°C
regulation, and load regulation. for LM323A, and 0°C to 125°C for LM323-N. A
hermetic TO-3 package is used for high reliability and
low thermal resistance.