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L4903 Datasheet(PDF) 1 Page - STMicroelectronics

Part # L4903
Description  DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS
PDF  8 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4903 Datasheet(HTML) 1 Page - STMicroelectronics

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L4903
DUAL 5V REGULATOR
WITH RESET AND DISABLE FUNCTIONS
July1993
PRELIMINARY DATA
PIN CONNECTION
Minidip
ORDERING NUMBERS : L4903
.
OUTPUT CURRENTS : I01 = 50mA
I02 = 100mA
.
FIXED PRECISION OUTPUT VOLTAGE
5V
± 2%
.
RESET FUNCTION CONTROLLED BY INPUT
VOLTAGE AND OUTPUT 1 VOLTAGE
.
RESET
FUNCTION
EXTERNALLY
PRO-
GRAMMABLE TIMING
.
RESET OUTPUT LEVEL RELATED TO OUT-
PUT 2
.
OUTPUT 2 INTERNALLY SWITCHED WITH
ACTIVE DISCHARGING
.
OUTPUT 2 DISABLE LOGICAL INPUT
.
LOW LEAKAGE CURRENT, LESS THAN 1
µA
AT OUTPUT 1
.
INPUT OVERVOLTAGE PROTECTION UP TO
60V
.
RESET OUTPUT NORMALLY LOW
.
OUTPUT TRANSISTORS SOA PROTECTION
.
SHORT CIRCUIT AND THERMAL OVER-
LOAD PROTECTION
DESCRIPTION
The L4903 is a monolithic low drop dual 5 V regu-
lator designed mainly for supplying microprocessor
systems.
Reset, data save functions and remote switch
on/off control can be realized.
1/8


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