DESCRIPTION

The L4923is a high current monolithic voltage regulator with very low voltage drop (0.70 V max at 1 A, TJ = 25 °C). The device is internally protected against load dumps transient of + 60 V, input overvoltage, reverse polarity, overheating and output short circuit : thanks to these features the L4923is very suited for the automotive and industrial applications.

The reset function is very useful for power off and power on information when supplying a microprocessor.

The inhibit function reduces drastically the consumption when no load current is required: typically the standby current value is 300 µA.

■ VERY LOW DROP (max. 0.9V at 1A) OVER FULL OPERATING TEMPERATURE RANGE (– 40 / + 125 °C)

■ LOW QUIESCENT CURRENT (max 70 mA at 1 A) OVER FULL T RANGE

■ PRECISEOUTPUT VOLTAGE(5V± 4)OVER FULL T RANGE

■ POWER ON-OFF INFORMATION WITH SETTABLE DELAY

■ INHIBIT FOR REMOTE ON-OFF COMMAND (active high)

■ LOAD STANDBY CURRENT

■ LOAD DUMP AND REVERSE BATTERY PROTECTION

■ SHORT CIRCUIT PROTECTION

■ THERMAL SHUTDOWN