LM323_02 Datasheet, PDF (1/8 Pages) ON Semiconductor – 3.0 A Positive Voltage Regulators

ON Semiconductort
3.0 A 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, LM323A
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
C_in*
0.33µF
LM323, A
Output
C_O**
ORDERING INFORMATION
Output
Voltage
Device Tolerance
Operating
Temperature
Range
Package
LM323T
LM323AT
4%
2%
T_J = 0° to +125°C
Plastic
Power
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.
*C_in is required if regulator is located an appreciable
*distance from power supply filter. (See Applications
*Information for details.)
**C_O is not needed for stability; however, it does
**improve transient response.
© Semiconductor Components Industries, LLC, 2002
1
January, 2002 – Rev. 2
Publication Order Number:
LM323/D