gs5806 600ma同步整流芯片datasheet

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1、深圳市中广芯源科技有限公司GS58061.5MHz,700mASynchronousStep-DownConverterDescriptionWirelessandDSLModemsPDAsTheGS5806isahighefficiencymonolithicMP3/MP4/MPMPlayersynchronousbuckregulatorusingaconstantfrequency,DigitalStillandVideoCamerascurrentmodearchitecture.Thedeviceisavailablein

2、anPortableInstrumentsadjustableversionandfixedoutputvoltages,suchas1.2V,1.5V,1.8V,etc.SupplycurrentwithnoloadisFeatures300uAanddropsto<1uAinshutdown.The2.5Vto6.5VinputvoltagerangemakestheGS5806ideallyHighEfficiency:Upto96%suitedforsingleLi-Ion,twotofourAAbattery-powered

3、1.5MHzConstantSwitchingFrequencyapplications.100%dutycycleprovideslowdropout700mAOutputCurrentatVIN=3Voperation,extendingbatterylifeinportablesystems.IntegratedMainswitchandsynchronousrectifier.PWMpulseskippingmodeoperationprovidesverylowNoSchottkyDiodeRequiredoutputripp

4、levoltagefornoisesensitiveapplications.2.5Vto6.5VInputVoltageRangeSwitchingfrequencyisinternallysetat1.5MHz,OutputVoltageasLowas0.6Vallowingtheuseofsmallsurfacemountinductorsand100%DutyCycleinDropoutcapacitors.TheinternalsynchronousswitchincreasesQuiescentCurrent:300µA

5、(input<4.2V)efficiencyandeliminatestheneedforanexternalSlopeCompensatedCurrentModeControlforSchottkydiode.LowoutputvoltagesareeasilyExcellentLineandLoadTransientResponsesupportedwiththe0.6Vfeedbackreferencevoltage.TheShortCircuitProtectionGS5806isavailableinasmallSOTpack

6、age.<1uAShutdownCurrentSpaceSaving5-PinSOT23packageApplicationsCellularandSmartPhonesMicroprocessorsandDSPCoreSuppliesTypicalApplicationCircuitηvsIo(VOUT=1.8V)1009080VIN=2.5V7060VIN=3.6V)GS5806%(50η40VIN=4.2V30VIN=5.0V20Vout=1.8V10TA=25C01101001000Io(mA)Figure1.BasicAp

7、plicationCircuitwithFigure2.TypicalEfficiencyCurveGS5806adjustableversionTEL:0755-27668758/29126058web:http://www.zgsemi.comwww.086ic.cn深圳市中广芯源科技有限公司GS5806AbsoluteMaximumRatingInputSupplyVoltage............................-0.3Vto+7VOperatingTemperatureRange...........-40°C

8、to+85°C(Note2)RUN,VVoltages............................-0.3VtoV+0.3VFBINJunctionTemperatu