L4949 Datasheet - STMicroelectronics

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