标签: linearregulator

LinearRegulatorLinearRegulators:TheoryOfOperationandCompensationLinearRegulators:TheoryOfOperationandCompensationIntroductionTheexplosiveproliferationofbatterypoweredequipmentinthepastdecadehascreateduniquerequirementsforavoltageregulatorthatcannotbemetbytheindustrystandardsliketheLM340ortheLM317.TheseregulatorsuseanNPNDarlingtonpasstransistor(Figure1),andwillbereferredtointhisdocumentasNPNregulators.Thedemandforhigherperformanceisbeingmetbythenewerlow-dropout(LDO)regulatorsandquasi-LDOregulators.TheNPNRegulatorTheNPNDarlingtonpasstransistorwithPNPdriverusedinanNPNregulatorrequiresthatatleast1.5Vto2.5Vbemaintainedfrominput-to-outputforthedevicetostayinregulation.Thisminimumvoltage″h……