Conv DC-DC 2.7V to 5.5V Step Down Single-Out 0.6V to 5.5V 0.6A 8-Pin STDFN EP T/R
DC-DC Step Down Controller, 3A, 0.6-13.2V Out, 4-13.2V In, 16-Pin TDFN EP

Buffer/Inverter Based Peripheral Driver, 1 Driver, 0.75A, PDSO5, ROHS COMPLIANT, SOT-23, 5 PIN

Power Switch ICs - Power Distribution USB Single Channel Power Switch
Switching Regulator, Current-mode, 0.6A, 1500kHz Switching Freq-Max, PDSO6,