LinearLTC3128SupercapacitorDatasheet说明书数据表

LinearLTC3128SupercapacitorDatasheet®3128isahighlyefficient,buck-boostDC/DCsupercapacitorcharger.Itoperatesefficientlyfrominputvoltagesabove,beloworequaltotheoutputvoltage.TheLTC3128incorporatesaccurateprogrammableaverageinputcurrentlimit,activechargebalancingandprogrammablemaximumcapacitorvoltage.ThiscombinationoffeaturesmakestheLTC3128idealforsafelychargingandprotectinglargecapacitorsinbackuppowersystems.Theinputcurrentlimitandmaximumcapacitorvoltageareeachprogrammedusingasingleresistor.Averageinputcurrentisaccuratelycontrolledovera0.5Ato3Aprogrammablerangewhiletheindividualmaximumcapacitorvoltagecanbesetfrom1.8Vto3.0V.ManualLib.comcollectsandclassifiestheglobalproductinstrunctionmanualstohelpusersaccessanytimeandanywhere,helpingusersmakebetteruseofproducts.®3128isahighlyefficient,buck-boostDC/DCsupercapacitorcharger.Itoperatesefficientlyfrominputvoltagesabove,beloworequaltotheoutputvoltage.TheLTC3128incorporatesaccurateprogrammableaverageinputcurrentlimit,activechargebalancingandprogram-mablemaximumcapacitorvoltage.ThiscombinationoffeaturesmakestheLTC3128idealforsafelychargingandprotectinglargecapacitorsinbackuppowersystems.Theinputcurrentlimitandmaximumcapacitorvoltageareeachprogrammedusingasingleresistor.Averageinputcurrentisaccuratelycontrolledovera0.5Ato3Aprogrammablerangewhiletheindividualmaximumcapacitorvoltagecanbesetfrom1.8Vto3.0V.OtherfeaturesoftheLTC3128include2µAquiescentcurrentfromVOUTinBurstMode®operation,accuratepower-goodandpowerfailureindicators,andthermaloverloadprotection.TheLTC3128isofferedinlowprofile,thermallyenhanced20-Lead4mm×5mm×0.75mmQFNand24-LeadTSSOPpackages.WideVIN(3AProgrammedInputCurrent)to4.2VStackedOutputCapacitorsChargingWaveformAPPLICATIONSn±2%AccurateAverageInputCurrentLimitProgrammableUpto3AnProgrammableMaximumCapacitorVoltageLimitnActiveChargeBalancingforFastChargingofUnmatchedCapacitorsnChargesSingleorStackedCapacitorsnVINRange:1.73Vto5.5VnVOUTRange:1.8Vto5.5Vn2µAQuiescentCurrentfromVOUTWhenChargednOutputDisconnectinShutdown:1µAIQShutdownnPower-GoodComparatornPowerFailureIndicatornThermallyEnhanced20-Lead(4mm×5mm×0.75mm)QFNand24-LeadTSSOPPackagesnSupercapacitorBasedBackupPowernMemoryBackupnServers,RAID,RFSystemsnIndustrial,Communications,ComputingL,LT,LTC,LTM,BurstMode,LinearTechnologyandtheLinearlogoareregisteredtrademarksandPowerPathisatrademarkofLinearTechnologyCorporation.Allothertrademarksarethepropertyoftheirrespectiveowners.1.7VTO5.5VUPTO3.0A10µF127k3.3µHC1:MurataDMF3Z5R5H474M3DTA0301k1.87MC1C1b940mFVOUT=4.2V3.57kC1a940mF10µFSW1RSENPRSENSRUNPFIPFOPGOODMAXVGNDFBPROGMIDLTC3128SW2VOUTPVOUTSVIN3128TA01470pFVOUT2.0V/DIVMID2.0V/DIVIIN2.0A/DIVILOAD2.0A/DIV2SECONDS/DIV3128TA01bThisManual:(4mm×5mm)PLASTICQFN910654321111213141516SW1RSENPRSENSRUNPROGNCVOUTPVOUTPVOUTSMIDPGOODFBNCSW1SW2SW2VINPFOPFIMAXVTJMAX=125°C,θJA=43°C/WEXPOSEDPAD(PIN21)ISGND,MUSTBESOLDEREDTOPCB(NOTE5)123456789101112TOPVIEWFEPACKAGE24-LEADPLASTICTSSOP242322212019181716151413SW1GNDGNDSW1RSENPRSENSRUNPROGNCNCVINGNDSW2SW2NCVOUTPVOUTPVOUTSMIDPGOODFBMAXVPFIPFO25GNDTJMAX=125°C,θJA=38°C/WEXPOSEDPAD(PIN25)SHOULDBESOLDEREDTOPCB(NOTE5)PINCONFIGURATIONABSOLUTEMAXIMUMRATINGSVIN,RSENP,VOUTP,MIDVoltage..................–0.3Vto6VRSENS,VOUTSVoltage.................................–0.3Vto6VRSENSDCCurrent....................................................–4ASW1,SW2DCVoltage.................................–0.3Vto6VSW1,SW2Pulsed(100ns)Voltage.............–1.0Vto7VPGOOD,PFO,RUNVoltage..........................–0.3Vto6V(Note1)ORDERINFORMATIONPROG,MAXV,FB,PFIVoltage.....................–0.3Vto6VPGOOD,PFODCCurrent........................................15mAOperatingJunctionTemperatureRange(Notes2,4)............................................–40°Cto125°CStorageTemperatureRange..................–65°Cto150°CLeadTemperature(Soldering,10sec)FEOnly.............................................................300°CLEADFREEFINISHTAPEANDREELPARTMARKINGPACKAGEDESCRIPTIONTEMPERATURERANGELTC3128EUFD#PBFLTC3128EUFD#TRPBF312820-Lead(4mm×5mm)PlasticQFN–40°Cto125°CLTC3128IUFD#PBFLTC3128IUFD#TRPBF312820-Lead(4mm×5mm)PlasticQFN–40°Cto125°CLTC3128EFE#PBFLTC3128EFE#TRPBFLTC3128FE24-LeadPlasticTSSOP–40°Cto125°CLTC3128IFE#PBFLTC3128IFE#TRPBFLTC3128FE24-LeadPlasticTSSOP–40°Cto125°CConsultLTCMarketingforpartsspecifiedwithwideroperatingtemperatureranges.ConsultLTCMarketingforinformationonnon-standardleadbasedfinishparts.Formoreinformationonleadfreepartmarking,goto:::