DS6550A PDF File ( Datasheet )

® RT6550A Synchronous DC-DC Step-Down Controller with 5V LDO General Description The RT6550A is a step-down, controller generating supply voltages for battery-powered systems. It includes PulseWidth Modulation (PWM) controller adjustable from 2V to 5.5V, and a 5V linear regulator which provides up to 100mA output current. Other features include on-board power-up sequencing, internal soft-start, and softdischarge output that prevents negative voltage during shutdown. A constant current ripple