L4938N Datasheet (STMicroelectronics) - DUAL MULTIFUNCTION VOLTAGE REGULATOR

L4938N, DUAL MULTIFUNCTION VOLTAGE REGULATOR

The L4938N is a monolithic integrated dual voltage regulatorswith two very low dropout outputsand additional functions such as power-on reset and input voltage sense.

They are designedfor supplying microcomputer controlled systems specially in automotive applications.

PIN CONNECTION (top view) POW

® L4938N/ND L4938NPD DUAL MULTIFUNCTION VOLTAGE REGULATOR .

STANDBYOUTPUT VOLTAGEPRECISION 5V ± 2% OUTPUT 2 TRACKED TO THE STANDBY OUTPUT OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE VERY LOW QUIESCENT CURRENT, LESS THAN 250µA, IN STANDBY MODE OUTPUT 2 VOLTAGE SETTABLE FROM 5 TO 20V OUTPUT CURRENTS : I01 = 50mA, I02 = 500mA VERY LOW DROPOUT (max 0.4V/0.6V) OPERATING TRANSIENT SUPPLY VOLTAGE UP TO 40V POWER-ON RESET CIRCUIT SENSING THE STANDBY OUTPUT VOLTAGE POWER-ON RESET

L4938N Features

* and auxiliary functions are provided to meet the requirements of supplying the microprocessor systems used in automotive applications. Furthermore the device is suitable also in other applications requiring two stabilized voltages. The modular approach allows other features and functions to be reali