LM323 Datasheet, PDF (1/8 Pages) ON Semiconductor – 3-AMPERE, 5 VOLT POSITIVE VOLTAGE REGULATORS

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Positive Voltage Regulators
The LM323,A are monolithic integrated circuits which supply a fixed
positive 5.0 V output with a load driving capability in excess of 3.0 A. These
three–terminal regulators employ internal current limiting, thermal shutdown,
and safe–area compensation. The A–suffix is an improved device with
superior electrical characteristics and a 2% output voltage tolerance. These
regulators are offered with a 0° to +125°C temperature range in a low cost
plastic power package.
Although designed primarily as a fixed voltage regulator, these devices
can be used with external components to obtain adjustable voltages and
currents. These devices can be used with a series pass transistor to supply
up to 15 A at 5.0 V.
• Output Current in Excess of 3.0 A
• Available with 2% Output Voltage Tolerance
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe–Area Compensation
• Thermal Regulation and Ripple Rejection Have Specified Limits
LM323, A
3–AMPERE, 5 VOLT
POSITIVE
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Pin 1. Input
2. Ground
3. Output
1
2
3
Heatsink surface is connected to Pin 2.
Simplified Application
Input
Cin*
0.33µF
LM323, A
Output
CO**
A common ground is required between the input and the output voltages. The input
voltage must remain typically 2.5 V above the output voltage even during the low point
on the input ripple voltage.
* Cin is required if regulator is located an appreciable
* distancefrompowersupplyfilter.(SeeApplications
* Information for details.)
** CO is not needed for stability; however, it does
** improve transient response.
ORDERING INFORMATION
Output
Voltage
Device Tolerance
Operating
Temperature
Range
Package
LM323T
LM323AT
4%
2%
TJ = 0° to +125°C
Plastic
Power
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1