TheSG3525A,SG3527Apulsewidthmodulatorcontrolcircuitsofferimprovedperformanceandlowerexternalpartscountwhenimplementedforcontrollingalltypesofswitchingpowersupplies.Theon–chip+5.1Vreferenceistrimmedto±1%andtheerroramplifierhasaninputcommon–modevoltagerangethatincludesthereferencevoltag