高效率，同步，降压（降压）控制器 High Efficiency, Synchronous, Step-down Buck Controllers
Buck Regulator Positive Output Step-Down DC-DC Controller IC 18-PDIP
得捷: IC REG CTRLR BUCK 18DIP
艾睿: DC/DC Cntrlr Dual-OUT Step Down 300kHz 18-Pin PDIP Tube
TI 德州仪器
ON Semiconductor 安森美