L4903

DUAL 5V REGULATOR

WITH RESET AND DISABLE FUNCTIONS

July1993

PRELIMINARY DATA

PIN CONNECTION

Minidip

ORDERING NUMBERS : L4903

.

.

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.

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