BIT3267-datasheet-A3

BeyondInnovationTechnologyCo.,Ltd.
2013/01/06Confidentialpage1of8ThisisanONE-TIMEcopy.Updateswillnotbeprovided
HighPerformancePWMControllerVersion:A3Pleasereadthenoticestatedinthispreamblecarefullybeforeaccessinganycontentsofthedocumentattached.AdmissionofBiTEK’sstatementthereinispresumedoncethedocumentisreleasedtothereceiver.BeyondInnovationTechnologyCo.,Ltd.
2013/01/06Confidentialpage2of8ThisisanONE-TIMEcopy.UpdateswillnotbeprovidedNotice:Firstly,theinformationfurnishedbyBeyondInnovationTechnologyCo.Ltd.(BiTEK)inthisdocumentisbelievedtobeaccurateandreliableandsubjecttoBiTEK’samendmentwithoutpriornotice.AndtheaforesaidinformationdoesnotformanypartorpartsofanyquotationorcontractbetweenBiTEKandtheinformationreceiver.Further,noresponsibilityisassumedfortheusageoftheaforesaidinformation.BiTEKmakesnorepresentationthattheinterconnectofitscircuitsasdescribedhereinwillnotinfringeonexitingorfuturepatentrights,nordothedescriptionscontainedhereinimplythegrantingoflicensestomake,useorsellequipmentconstructedinaccordancetherewith.Besides,theproductinthisdocumentisnotdesignedforuseinlifesupportappliances,devices,orsystemswheremalfunctionofthisproductcanreasonablybeexpectedtoresultinpersonalinjury.BiTEKcustomers’usingorsellingthisproductforuseinsuchapplicationsshalldosoattheirownriskandagreetofullyindemnifyBiTEKforanydamageresultingfromsuchimproperuseorsale.Atlast,theinformationfurnishedinthisdocumentisthepropertyofBiTEKandshallbetreatedashighlyconfidentiality;anykindofdistribution,disclosure,copying,transformationoruseofwholeorpartsofthisdocumentwithoutdulyauthorizationfromBiTEKbypriorwrittenconsentisstrictlyprohibited.ThereceivershallfullycompensateBiTEKwithoutanyreservationforanylossesthereofduetoitsviolationofBiTEK’sconfidentialrequest.ThereceiverisdeemedtoagreeonBiTEK’sconfidentialrequestthereinsupposethatsaidreceiverreceivesthisdocumentwithoutmakinganyexpresslyopposition.Intheconditionthataforesaidoppositionismade,thereceivershallreturnthisdocumenttoBiTEKimmediatelywithoutanydelay.BeyondInnovationTechnologyCo.,Ltd.
2013/01/06Confidentialpage3of8ThisisanONE-TIMEcopy.UpdateswillnotbeprovidedFeatures:Pinlayout:
CurrentmodePWMcontroller
8V~28Voperationvoltage
Overcurrentprotection,OCP
Overvoltageprotection,OVP
Loadshortprotection,LSP
Frequencyselection
Internalsoft-start
Overtemperatureprotection,OTP
Internalundervoltagelockout,UVLO
Totempoleoutput
SOP-8package12345678OUTGNDOCPOVPINNCMPEAVDD12345678OUTGNDOCPOVPINNCMPEAVDDGeneraldescription:Recommendedoperatingcondition:Supplyvoltage……………………….8V~28VOperatingfrequency………….220kHz/110kHz/55kHzOperatingambienttemperature…...-20~85AbsoluteratingsTheBIT3267isahighfrequencyPWMcontrollerintegratesrequiredfunctionsforboostconversioninasmallSOP-8package.Alow0.21Vfeedbackvoltage,overvoltageprotectionandovercurrentprotectionandloadshortprotectionmakeBIT3267tobeanidealcontrollerforLEDbacklightsupplies.Frequencyselectionisflexibleinvariablesystemdesign.Internalsoftstartfunctioncanavoidinrushcurrenthappenedinthestartupperiod.OvertemperatureprotectionandUVLOmakesystemreliable.CMOSprocessgreatlyreducestheoperatingcurrentwhencomparingtosimilarproductsVDD…………………………...…………-0.3~+28VGND…………………..………….………±0.3VInputvoltage……………….…….……..-0.3~VDD+0.3VOperatingambienttemperature……...-20~85Operatingjunctiontemperature….….+150Storagetemperature……………..…….-55~150Functionalblockdiagram:DigitalcontrolcircuitFrequencyselection+-+-0.3VOvertemperatureprotectionOCPCMP+-0.21VINNSoftstartBufferOUTEA+-2VOVPLSPprotectionDigitalcontrolcircuitFrequencyselection+-+-+-0.3VOvertemperatureprotectionOCPCMP+-0.21VINNSoftstartBufferOUTEA+-+-2VOVPLSPprotectionBeyondInnovationTechnologyCo.,Ltd.
2013/01/06Confidentialpage4of8ThisisanONE-TIMEcopy.UpdateswillnotbeprovidedDC/ACcharacteristics:VDD=15V,TA=25unlessotherwisespecified.ParameterTestconditionsMin.Typ.Max.UnitSupplyvoltagesPinVDDinput828VUndervoltagelookoutPositiveGoingThreshold678VHysteresisNote1.0.511.5VChipconsumedcurrentNoload0.714mAEnablecontrolON2VDDVOFF00.8VErroramplifierreferencevoltageNon-Invertinginputoftheerroramplifier0.2030.210.217VOperatingfrequencyOSCconnected1k49.55560.5KHzOSCconnected10k99110121KHzOperatingfrequencyrangeOSCconnected22k198220242KHzErroramplifierOpenloopgainNote1507090dBOvercurrentprotection,OCPandovervoltageprotection,OVPOCPvoltage0.250.30.35VOVPvoltage1.892.12.31VLoadshortprotection,LSPLSPvoltage0.811.2VOvertemperatureprotection,OTPOvertemperatureprotection,OTPNote1.120180200hysteresisNote1.305070SoftstartandminimumoutputofftimeSoftstarttimeNote1.1215.319msMinimumofftime300450600nsOutputdriveRisingtime03060nSFallingtimeVDD=12V,1000pFload02550nSNote1.Onlyguaranteedbysimulationorsampledevaluationduring–20~+85C.Not100%tested.BeyondInnovationTechnologyCo.,Ltd.
2013/01/06Confidentialpage5of8ThisisanONE-TIMEcopy.UpdateswillnotbeprovidedPindescription:PinNo.SymbolDescriptions1OUTOutputpin2GNDGroundpin3OCPOvercurrentprotectionandfrequencyselection4OVPOvervoltageprotection5INNTheinvertingi