TPIC6B273DW` TPIC6B273DW= TPIC6B273DWG4 TPIC6B273DWR TPIC6B273DWR G4 TI TPIC6B273DWR/TPIC6B273DW TPIC6B273DWRG4 TPIC6B273DWRG4 SOP20 2012+TI TPIC6B273N TPIC6B273N 其他IC