所需E币: 5
时间: 2019-12-27 21:04
大小: 266.16KB
Battery-operatedequipment(mostnotablycellphonesandnotebookcomputers)havecreatedastrongdemandforlinearregulatorsinsmallpackages.Whilesuchpackagessavespace,theyalsohavepoorheattransfercharacteristics.Tominimizepowerdissipation,theseregulatorsaredesignedtoworkwithverylowinput/outputvoltagedifferentials,hencethename“lowdropoutregulators”orLDOs.LDOsspecifymaximumoutputcurrentandinputvoltagelimits,butblindlyoperatingtheLDOwithintheselimitswillsurelyresultinexceedingthemaximumpowerdissipationcapability.MAN761LDOThermalConsiderationsTheconservationofpower,statesthatpowerinmustAuthor:PaulPaglia,equalpowerout.Consequently,inputpowerisequaltoMicrochipTechnologyInc.thepowerdeliveredtotheloadplusthepowerdissipatedintheLDO,(Equation1):INTRODUCTIONEQUATION1:Battery-operatedequipment(mostnotablycellph……