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