升降压电源管理芯片 TPS63000

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1、TPS63000TPS63001(3,25mmx3,25mm)TPS63002www.ti.comSLVS520–MARCH2006HIGHEFFICIENTSINGLEINDUCTORBUCK-BOOSTCONVERTERWITH1.8-ASWITCHESFEATURESDESCRIPTION·Upto95%EfficiencyTheTPS6300xdevicesprovideapowersupply·1200-mAOutputCurrentat3.3VinStepDownsolutionforproductspoweredbyeithe

2、ratwo-cell,orMode(VIN3.6V...5.5V)three-cellalkaline,NiCdorNiMH,orone-cellLi-IonorLi-polymerbattery.Outputcurrentscangoashighas·upto800-mAOutputCurrentat3.3VinBoost1200mAwhileusingasingle-cellLi-IonorLi-PolymerMode(VIN>2.4V)Battery,anddischargeitdownto2.5Vorlower.The·Automa

3、ticTransitionbetweenStepDownandbuck-boostconverterisbasedonafixedfrequency,BoostModepulse-width-modulation(PWM)controllerusing·DeviceQuiescentCurrentlessthan50mAsynchronousrectificationtoobtainmaximumefficiency.Atlowloadcurrentstheconverterenters·InputVoltageRange:1.8Vto5.

4、5VthePowerSavemodetomaintainahighefficiency·FixedandAdjustableOutputVoltageOptionsoverawideloadcurrentrange.ThePowerSavefrom1.2Vto5.5Vmodecanbedisabled,forcingtheconverterto·PowerSaveModeforImprovedEfficiencyatoperateatafixedswitchingfrequency.Themaximumaveragecurrentinthe

5、switchesislimitedtoatypicalLowOutputPowervalueof1800mA.Theoutputvoltagecanbe·ForcedfixedFrequencyOperationandprogrammedbyanexternalresistordivider,orisSynchronizationpossiblefixedinternallyonthechip.Theconvertercanbe·LoadDisconnectDuringShutdowndisabledtominimizebatterydra

6、in.Duringshutdown,theloadiscompletelydisconnectedfromthebattery.·Over-TemperatureProtectionThedeviceispackagedina10-pinQFN·AvailableinSmall3mmx3mm,QFN-10PowerPAD™packagemeasuring3mmx3mmPackage(DRC).APPLICATIONS·AllTwo-CellandThree-CellAlkaline,NiCdorNiMHorSingle-CellLiBatt

7、eryPoweredProducts·PortableAudioPlayers·PDAs·CellularPhones·PersonalMedicalProducts·WhiteLED`sL12.2µFL1L2VINVINVOUTVOUT1.8Vto3.3VuptoC1R3VINAR1C25.5V1200mA10µFEN10µFFBC3PS/SYNCR2GNDPGNDTPS63000Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduse

8、incriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappears