RICHTEK
控制器, PWM 降压, 5.5V-4.5V电源, 200 kHz, 3.3V输出, WQFN-12
TEXAS INSTRUMENTS
芯片, EFUSE功率多路复用器, 2.7V-18V, WQFN-20
DC-DC CONTROLLER, BOOST, ADJUSTABLE, 1MH