RICHTEK
DC-DC开关降压-升压稳压器, 可调, 2.5V至5.5V输入, 2.1V-5.2V/3A输出, WLCSP-25
SILICON LABS
DC/DC Switching Boost Regulator, Adjustable, 2V-5V in, 2.1V-5V out, 100 mA, TDFN-10