L4903 Datasheet - STMicroelectronics

L4903 DUAL 5V REGULATOR WITH RESET AND DISABLE FUNCTIONS

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. PIN CONNECTION July1993 1/8 L4903 PIN FUNCTIONS N° 1 2 3 4 5 6 Name Input 1 Input 2 Timing Capacitor GND Disable.

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.

L4903 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 circui

L4903_STMicroelectronics.pdf