Conv DC-DC 2.7V to 5.5V Step Down Single-Out 1V to 2.5V 1.5A 8-Pin FTDFN T/R
Step Up DC-DC Controller, 2.4-5.25V In, 3-5V Adj Out, 12-Pin TDFN EP SMT

Sync Step Up DC-DC Conv, 0.65V-5.5V In, 0.5V-5.5V Out, 0.6A, 6-Pin TSOT-23
Switching Regulator, Current-mode, 2A, 1440kHz Switching Freq-Max, PDSO10,