L4945

5V非常低的压差电压稳压器 5V VERY LOW DROP VOLTAGE REGULATOR

DESCRIPTION

The is a monolithic integrated circuit in Versawatt package specially designed to provide a stabilized supply voltage for automotive and in dustrial electronic systems. Thanks to their very low voltage drop, in automotive applications the devices can work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, they incorporate a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car.

■ 5V ± 4% PRECISE OUTPUT VOLTAGE OVER FULL TEMPERATURE RANGE – 40 / 125 °C

■ VERY LOW VOLTAGE DROP 0.75Vmax OVER FULL TEMPERATURE RANGE

■ OUTPUT CURRENT UP TO 500mA

■ OVERVOLTAGE AND REVERSE VOLTAGE PROTECTIONS

■ REVERSE VOLTAGE PROTECTION

■ SHORT CIRCUIT PROTECTION AND THERMAL SHUT-DOWN with hysteresis

■ LOW START UP CURRENT