Description

The L4972A is a stepdown monolithic power switching regulator delivering 2A at a voltage variable from 5.1 to 40V.

Features

■ 2A OUTPUT CURRENT

■ 5.1V TO 40V OUTPUT VOLTAGE RANGE

■ 0 TO 90 DUTY CYCLE RANGE

■ INTERNAL FEED-FORWARD LINE REG.

■ INTERNAL CURRENT LIMITING

■ PRECISE 5.1V ± 2 ON CHIP REFERENCE

■ RESET AND POWER FAIL FUNCTIONS

■ INPUT/OUTPUT SYNC PIN

■ UNDER VOLTAGE LOCK OUT WITH

HYSTERETIC TURN-ON

■ PWM LATCH FOR SINGLE PULSE PER

PERIOD

■ VERY HIGH EFFICIENCY

■ SWITCHING FREQUENCY UP TO 200KHz

■ THERMAL SHUTDOWN

■ CONTINUOUS MODE OPERATION