DESCRIPTION

The L4938E/ED/EPD is a monolithic integrated dual voltage regulator with two very low dropout outputs and additional functions as power-on reset and input voltage sense. It is designed for supplying the microcomputer controlled systems especially in automotiveapplications.

■ ENABLE AND SENSE INPUTS (EN, SI) PROTECTED AGAINST NEGATIVE TRANSIENTS DOWN TO -5V

■ RESET THRESHOLD ADJUSTABLE FROM 3.8 TO 4.7V

■ EXTREMELY LOW QUIESCENT CURRENT, 65µA (LESS THAN 90µA) IN STANDBY MODE

■ OPERATING DC SUPPLY VOLTAGE RANGE 5V - 28V

■ OPERATING TRANSIENT SUPPLY VOLTAGE UP TO 40V

■ HIGH PRECISION STANDBY OUTPUT VOLTAGE 5V ± 1 WITH 100mA CURRENT CAPABILITY

■ OUTPUT 2 VOLTAGE 5V ± 2 WITH 400mA CURRENT CAPABILITY (ADJ WIRED TO VOUT2)

■ OUTPUT 2 VOLTAGE ADJUSTABLE BY EXTERNAL VOLTAGE DIVIDER

■ OUTPUT 2 DISABLE FUNCTION FOR STANDBY MODE