复位电路可确保有效电源电压

摘要：本文重点，确保有效的系统电压是目前之前将它应用于负载使用外部MOSFET交换机。这个简单的电路使用复位电路和MOSFET电期间提供保护电路。Maxim>AppNotes>AUTOMOTIVEMICROPROCESSORSUPERVISORCIRCUITSKeywords:resetcircuit,power-up,por,poweronreset,resettimeout,sequencer,active-high,push-pull,Apr11,2002SOT23,protectioncircuitAPPLICATIONNOTE1050ResetCircuitEnsuresValidSupplyVoltageAbstract:ThisarticlefocusesonusinganexternalMOSFETswitchtoensureavalidsystemvoltageispresentbeforeapplyingittotheload.ThissimplecircuitusesaresetcircuitandtheMOSFETtoprovideaprotectioncircuitduringpower-up.Itisoftennecessarytopreventapowersupply'svoltagefrombeingappliedtoaloaduntilthevoltagehasreachedacertainminimumvalue.ThecircuitofFigure1,consistingoftwocompactSOT23packages,protectstheloadbyblockingthesupplyvoltage(nomi