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本文档介绍了使用便携式电器开关电源来控制外设功能的概念。AN11159DistributedpowerinportabledevicesRev.1―16March2012ApplicationnoteDocumentinformationInfoContentKeywordsdistributedpower,LowDropOut(LDO)regulators,DC-to-DCconverter,loadswitch,quiescentcurrent,loadcurrentAbstractThisdocumentdescribesconceptsforportableappliancesusingswitchablepowersuppliestocontrolperipheralfunctions.Afocusissetonvoltageconversionandpowerdistributionintheapplication.ManydifferentvoltagesarerequiredforthevariousICsinmodernmobilesystems.Thecentralbatterysuppliespowertoma……