所需E币: 4
时间: 2020-1-10 12:31
大小: 156.63KB
LTC4558LTC4558DualSIM/SmartCardPowerSupplyandInterfaceFEATURES■■■■■■■■DESCRIPTIONTheLTC4558providesthepowerconversionandsignalleveltranslationneededforadvancedcellulartelephonestointerfacewith1.8Vor3Vsubscriberidentitymodules(SIMs).Thedevicemeetsallrequirementsfor1.8Vand3VSIMsandcontainsLDOregulatorstopower1.8Vor3VSIMcardsfroma2.7Vto5.5Vinput.Theoutputvoltagescanbesetusingthetwovoltageselectionpinsandupto50mAofloadcurrentcanbesupplied.Achannelselectpindetermineswhichchannelisopenforcommunication.Separateenablepinsforeachchannelallowbothcardstobepoweredatonceandallowforfastertransitionfromonechanneltotheother.Internalleveltranslatorsallowcontrollersoperatingwithsu……
标签: ltc4558
