SDH7713DH 士兰微 非隔离电源降压恒流LED驱动器 ¥0.10 SDH7711B SDH7711BRH SDH7711BRHTR SILAN 照明电源恒流IC ¥0.10 SA21345AFCA 矽力杰 SA21345A 电源芯片 SILERGY ¥5.00 KP2192SG KP2192 KP2192SGA kiwi必易微隔离三绕组恒压电源芯片 ¥0.10 BP2525B BP2525F BP2525D 低功耗辅助电源供电芯片 ¥0.60 WS9035E WS9035ES4P WINSEMI稳先微恒流电源LED驱动芯片 ¥0.28