MAX1721EUT-T中文资料

GeneralDescriptionTheultra-smallMAX1719/MAX1720/MAX1721monolithic,CMOScharge-pumpinvertersacceptinputvoltagesrangingfrom+1.5Vto+5.5V.TheMAX1720operatesat12kHz,andtheMAX1719/MAX1721operateat125kHz.Highefficiency,smallexternalcomponents,andlogic-controlledshutdownmakethesedevicesidealforbothbattery-poweredandboard-levelvoltageconversionapplications.OscillatorcontrolcircuitryandfourpowerMOSFETswitchesareincludedon-chip.AtypicalMAX1719/MAX1720/MAX1721applicationisgeneratinga-5Vsupplyfroma+5Vlogicsupplytopoweranalogcircuitry.Allthreepartscomeina6-pinSOT23packageandcandeliveracontinuous25mAoutputcurrent.Forpin-compatibleSOT23switched-capacitorvoltageinverterswithoutshutdown(5-pinSOT23),seetheMAX828/MAX829andMAX870/MAX871datasheets.Forapplicationsrequiringmorepower,theMAX860/MAX861deliverupto50mA.Forregulatedoutputs(upto-2xVIN),refertotheMAX868.TheMAX860/MAX861andMAX868areavailableinspace-savingµMAXpackages.ApplicationsLocalNegativeSupplyfromaPositiveSupplySmallLCDPanelsGaAsPABiasSupplyHandy-Terminals,PDAsBattery-OperatedEquipmentFeatures♦♦1nALogic-ControlledShutdown♦♦6-PinSOT23Package♦♦99.9%VoltageConversionEfficiency♦♦50µAQuiescentCurrent(MAX1720)♦♦+1.5Vto+5.5VInputVoltageRange♦♦25mAOutputCurrent♦♦RequiresOnlyTwo1µFCapacitors(MAX1719/MAX1721)MAX1719/MAX1720/MAX1721SOT23,Switched-CapacitorVoltageInverterswithShutdown________________________________________________________________MaximIntegratedProducts15TOPVIEWINGNDC1-C1+OUT()AREFORMAX1719SOT23-616SHDN(SHDN)MAX1719MAX1720MAX1721234PinConfigurationC1+C1-INSHDNOUTGNDON1µF1µFOFFINPUT1.5Vto5.5VNEGATIVEOUTPUT-1·VIN25mAMAX1721TypicalOperatingCircuit19-1439;Rev2;4/04PARTMAX1719EUT-40°Cto+85°CTEMPRANGEPIN-PACKAGE6SOT23-6OrderingInformationSOTTOPMARKAACAMAX1721EUT-40°Cto+85°C6SOT23-6AABTMAX1720EUT-40°Cto+85°C6SOT23-6AABSForpricing,delivery,andorderinginformation,pleasecontactMaxim/DallasDirect!at1-888-629-4642,orvisitMaxim’swebsiteat(VIN=+5V,SHDN=GND(MAX1719),SHDN=IN(MAX1720/MAX1721),C1=C2=10µF(MAX1720),C1=C2=1µF(MAX1719/MAX1721),circuitofFigure1,TA=0°Cto+85°C,unlessotherwisenoted.TypicalvaluesareatTA=+25°C.)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.INtoGND.................................................................-0.3Vto+6VOUTtoGND.............................................................-6Vto+0.3VC1+,SHDN,SHDNtoGND.........................-0.3Vto(VIN+0.3V)C1-toGND...............................................(VOUT-0.3V)to+0.3VOUTOutputCurrent..........................................................100mAOUTShortCircuittoGND..............................................IndefiniteContinuousPowerDissipation(TA=+70°C)6-PinSOT23(derate8.7mW/°Cabove+70°C).................696mWOperatingTemperatureRange...........................-40°Cto+85°CJunctionTemperature......................................................+150°CStorageTemperatureRange.............................-65°Cto+150°CLeadTemperature(soldering,10s).................................+300°CIOUT=5mAMAX1719/MAX1721RL=10kΩSHDN/SHDN=GNDorVINVIN(MIN)≤VIN≤+2.5VMAX1720RL=10kΩ+2.5V≤VIN≤+5.5VVIN(MIN)≤VIN≤+2.5V+2.5V≤VIN≤+5.5VIOUT=0,TA=+25°CSHDN=IN(MAX1719),SHDN=GND(MAX1720/MAX1721),OUTisinternallyforcedtoGNDinshutdownTA=+25°CTA=+25°CSHDN=IN(MAX1719),SHDN=GND(MAX1720/MAX1721)IOUT=10mACONDITIONS80µs800Wake-UpTimefromShutdown10nA-1000.05100IIL,IIHSHDN/SHDNBiasCurrent0.2V0.6VILSHDN/SHDNInputLogicLowVIN-0.2V2.0VIHSHDN/SHDNInputLogicHighΩ412RO,SHDNOUTtoGNDShutdownResistance65Ω2350ROOutputResistance(Note1)1.45.51.55.5V1.255.5VINSupplyVoltageRange%9999.9VoltageConversionEfficiency70125180kHz71217fOSCOscillatorFrequency0.021.55.5µA5090ICCQuiescentSupplyCurrent(Note3)350650µA0.0011ISHDNShutdownSupplyCurrentUNITSMINTYPMAXSYMBOLPARAMETERTA=0°Cto+85°CTA=+25°CTA=0°Cto+85°CTA=+25°CMAX1719/MAX1721MAX1720TA=+85°CTA=+25°CMAX1719/MAX1721MAX1720TA=0°Cto+85°CTA=+25°CTA=+85°CTA=+25°CMAX1719/MAX1721MAX1720MAX1719/MAX1720/MAX1721SOT23,Switched-CapacitorVoltageInverterswithShutdown_______________________________________________________________________________________3-5-4-3-2-1002025101553035404550OUTPUTVOLTAGEvs.OUTPUTCURRENTMAX1720/21toc01OUTPUTCURRENT(mA)OUTPUTVOLTAGE(V)VIN=+1.5VVIN=+2VVIN=+3.3VVIN=+5V020104030605070908010001015205253035454050MAX1720EFFICIENCYvs.OUTPUTCURRENTMAX1720/21toc02OUTPUTCURRENT(mA)EFFICIENCY(%)VIN=+1.5VVIN=+3.3VVIN=+2VVIN=+5V020104030605070908010001015205253035454050MAX1719/MAX1721EFFICIENCYvs.OUTPUTCURRENTMAX1720/21toc03OUTPUTCURRENT(mA)EFFICIENCY(%)VIN=+1.5VVIN=+2VVIN=+3.3VVIN=+5VTypicalOperatingChar