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L4945 Datasheet(PDF) 1 Page - STMicroelectronics

Part # L4945
Description  5V VERY LOW DROP VOLTAGE REGULATOR
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4945 Datasheet(HTML) 1 Page - STMicroelectronics

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L4945
5V VERY LOW DROP VOLTAGE REGULATOR
5V
± 4% PRECISE OUTPUT VOLTAGE
OVER FULL TEMPERATURE RANGE
(– 40 / 125
°C)
VERY LOW VOLTAGE DROP (0.75Vmax)
OVER FULL TEMPERATURE RANGE
OUTPUT CURRENT UP TO 500mA
OVERVOLTAGE AND REVERSE VOLTAGE
PROTECTIONS
REVERSE VOLTAGE PROTECTION
SHORT CIRCUIT PROTECTION AND THER-
MAL SHUT-DOWN (with hysteresis)
LOW START UP CURRENT
DESCRIPTION
The L4945 is a monolithic integrated circuit in
Versawatt package specially designed to provide
a stabilized supply voltage for automotive and in-
dustrial electronic systems. Thanks to their very
low voltage drop, in automotive applications the
devices can work correctly even during the crank-
ing phase, when the battery voltage could fall as
low as 6V. Furthermore, they incorporate a com-
plete range of protection circuits against the dan-
gerous overvoltages always present on the bat-
tery rail of the car.
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
March 1999
®
BLOCK DIAGRAM
TO220
ORDERING NUMBER: L4945
1/6


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