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LM123 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. LM123
Description  THREE-TERMINAL 3A-5V POSITIVE VOLTAGE REGULATORS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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LM123/LM223
LM323
March 1993
THREE-TERMINAL 3A-5V POSITIVE VOLTAGE REGULATORS
.
OUTPUT CURRENT : 3A
.
INTERNAL CURRENT AND THERMAL LIMI-
TING
.
TYPICAL OUPUT IMPEDANCE : 0.01
.
MINIMUM INPUT VOLTAGE : 7.5V
.
POWER DISSIPATION : 30W
DESCRIPTION
The LM123, LM223, LM323 are three-terminal posi-
tive voltage regulators with a preset 5V output and
a load driving capability of 3A. New circuit design
and processing techniques are used to provide the
high output current without sacrificing the regulation
characteristics of lower current devices.
The 3A regulator is virtually blowout proof.
Current limiting, power limiting and thermal shut-
down provide the same high level of reliability ob-
tained with these techniques in the LM209, 1A regu-
lator.
An overall worst case specification for the combined
effects of input voltage, load current, ambient tem-
perature, and power dissipation ensure that the
LM123, LM223, LM323 will perform satisfactorily as
a system element.
TO-3
PIN CONNECTION
1 - Input
2 - Output
TO-3
(bottom view)
ORDER CODES
Part Number
Temperature
Range
Package
KT
LM123
-55
oC to 150 oC
LM223
-25
oC to 150 oC
LM323
0
oC to 125 oC
••
TO-220
TO-220
(front view)
1 - Input
2 - Output
3 - GND
1/9




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