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L4903 - DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS

Datasheet Summary

Description

The L4903 is a monolithic low drop dual 5 V regulator designed mainly for supplying microprocessor systems.

Reset, data save functions and remote switch on/off control can be realized.

Features

  • : - 5 V internal reference without voltage divider between the output and the error comparator - very low drop series regulator element utilizing current mirrors permit high output impedance and then very low leakage current even in power conditions. This output may thereforebe used to supply circuits continuously, such as volatile RAMs, allowing the use of a back-up battery. The V02 can supply other non essential 5 V circuits which may be powered down when the system is inactive, or that must b.

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Datasheet Details

Part number L4903
Manufacturer STMicroelectronics
File Size 140.08 KB
Description DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS
Datasheet download datasheet L4903 Datasheet
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Full PDF Text Transcription

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L4903 DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS . . . . . . . . . . . . PRELIMINARY DATA 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 PROGRAMMABLE TIMING RESET OUTPUT LEVEL RELATED TO OUTPUT 2 OUTPUT 2 INTERNALLY SWITCHED WITH ACTIVE DISCHARGING OUTPUT 2 DISABLE LOGICAL INPUT LOW LEAKAGE CURRENT, LESS THAN 1µA AT OUTPUT 1 INPUT OVERVOLTAGE PROTECTION UP TO 60V RESET OUTPUT NORMALLY LOW OUTPUT TRANSISTORS SOA PROTECTION SHORT CIRCUIT AND THERMAL OVERLOAD PROTECTION Minidip ORDERING NUMBERS : L4903 DESCRIPTION The L4903 is a monolithic low drop dual 5 V regulator designed mainly for supplying microprocessor systems.
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