L4949ED Datasheet PDF - ST Microelectronics

●DESCRIPTION

●The L4949E is a monolithic integrated 5V voltage regulator with a very low dropout output and additional functions as power-on reset and input voltage sense. It is designed for supplying the microcomputer controlled systems especially in automotive applications.

●■ OPERATING DC SUPPLY VOLTAGE RANGE 5V - 28V

●■ TRANSIENT SUPPLY VOLTAGE UP TO 40V

●■ EXTREMELY LOW QUIESCENT CURRENT IN STANDBY MODE

●■ HIGH PRECISION STANDBY OUTPUT VOLTAGE 5V±1%

●■ OUTPUT CURRENT CAPABILITY UP TO 100mA

●■ VERY LOW DROPOUT VOLTAGE LESS THAN 0.5V

●■ RESET CIRCUIT SENSING THE OUTPUT VOLTAGE

●■ PROGRAMMABLE RESET PULSE DELAY WITH EXTERNAL CAPACITOR

●■ VOLTAGE SENSE COMPARATOR

●■ THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTIONS