DC/DC Controller, 2.9V to 5.5V Input, 800mV to 3.3V Output, 4A, QCCN-16
Dual DC/DC Controller, 500mA, 3.3V, 4.2MHz, MLPQ-18
DC/DC Controller, 4A, 5.5V, 150MHz, Voltage-Mode, Synchronous