4OB2362L-Datasheet_Acbel_150305

©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_2362L00-1-OB2362LAdaptiveMulti-ModePWMControllerGENERALDESCRIPTIONOB2362LisahighlyintegratedcurrentmodePWMcontrolICoptimizedforhighperformance,lowstandbypowerandcosteffectiveofflineflybackconverterapplications.Atfullloading,theICoperatesinfixedfrequency(65KHz)mode.Whentheloadinggoeslow,itoperatesinGreenmodewithvalleyswitchingforhighpowerconversionefficiency.Whentheloadisverysmall,theICoperatesin‘ExtendedBurstMode’tominimizethestandbypowerloss.Asaresult,highconversionefficiencycanbeachievedinthewholeloadingrange.VCClowstartupcurrentandlowoperatingcurrentcontributetoareliablepoweronstartupandlowstandbydesignwithOB2362L.OB2362Lofferscomprehensiveprotectioncoveragewithauto-recoveryincludingCycle-by-Cyclecurrentlimiting(OCP),overloadprotection(OLP),VCCundervoltagelockout(UVLO),overtemperatureprotection(OTP),andovervoltageprotection(OVP).ExcellentEMIperformanceisachievedwithOn-Brightproprietaryfrequencyshufflingtechnique.Thetoneenergyatbelow23KHzisminimizedinthedesignandaudionoiseiseliminatedduringoperation.OB2362LisofferedinSOT23-6package.APPLICATIONSOfflineAC/DCflybackconverterfor■Generalpowersupply■PowerAdapterFEATURES■PoweronsoftstartreducingMOSFETVdsstress■Multi-ModeOperation65KHzfixedfrequencymode@FullLoadValleyswitchingoperation@GreenmodeBurstMode@LightLoad&NoLoad■FrequencyshufflingforEMI■Extendedburstmodecontrolforimprovedefficiencyandlowstandbypowerdesign■Audionoisefreeoperation■ComprehensiveprotectioncoverageoVCCUnderVoltageLockoutwithhysteresis(UVLO)oVCCOverVoltageProtection(VCCOVP)oCycle-by-cycleovercurrentthresholdsettingforconstantoutputpowerlimitingoveruniversalinputvoltagerangeoOverLoadProtection(OLP)withauto-recoveryoBrownoutprotectionwithauto-recoveryoOutputOverVoltageProtection(OutputOVP)withauto-recovery,andtheOVPtriggeredvoltagecanbeadjustedbytheresistorsconnectedbetweenauxiliarywindingandgroundoOutputdiodeshortprotectionwithauto-recoveryTYPICALAPPLICATIONOn-BrightconfidentialtoAcbel©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_2362L00-2-OB2362LAdaptiveMulti-ModePWMControllerGENERALINFORMATIONPinConfigurationDEMVCCFBCSGate123456GNDOrderingInformationPartNumberDescriptionOB2362LMPSOT23-6,Pb-freeinT&RPackageDissipationRatingPackageRJA(℃/W)SOT23-6200RecommendedoperatingconditionSymbolParameterRangeVCCVCCSupplyVoltage12to26VAbsoluteMaximumRatingsParameterValueVCCDCSupplyVoltageVOVP-1VFBInputVoltage-0.3to7VCSInputVoltage-0.3to7VDEMInputVoltage-0.3to7VMin/MaxOperatingJunctionTemperatureTJ-40to150℃OperatingAmbientTemperatureTA-40to85℃Min/MaxStorageTemperatureTstg-55to150℃LeadTemperature(Soldering,10secs)260℃Note:Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimplied.Exposuretoabsolutemaximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.OB2362LXXHighPerformanceCurrentModePWMControllerPackageM:SOT23-6PackagePb-freeP:Pb-freeMarkingInformation362YWW.ZZZLSY:YearCodeWW:WeekCode(01-52)ZZZ:LotcodeL:CharacterCodeS:InternalcodeOn-BrightconfidentialtoAcbel©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_2362L00-3-OB2362LAdaptiveMulti-ModePWMControllerTERMINALASSIGNMENTSPinNameI/ODescriptionGNDPGroundFBIFeedbackinputpin.ThePWMdutycycleisdeterminedbyvoltagelevelintothispinandthecurrent-sensesignalatPinCS.DEMIMultiplefunctionspin.ConnectingtworesistorsfromVauxtogroundcanadjustoutputOVPtriggervoltage,Brown-in/Brown-outtriggercurrentanddetecttransformercoredemagnetization.CSICurrentsenseinputVCCPPowerSupplyGateOTotem-polegatedriveroutputforpowerMOSFETOn-BrightconfidentialtoAcbel©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_2362L00-4-OB2362LAdaptiveMulti-ModePWMControllerFUNCTIONALBLOCKDIAGRAMVCCCSFBOLPPWMComparatorOSCRSQSlopecompensationAVDDVocpLEBSoftDriverLogicControlGATETimerDEMMultiModeControlUVLOVref&IrefAVDDInternalblocksOLPOCPComparatorOVPOVPOVPTempsenseBOEXOVPOTPGNDDiodeshortDiodeshortDiodeshortValleyDetectorValleySValleyOn-BrightconfidentialtoAcbel©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_2362L00-5-OB2362LAdaptiveMulti-ModePWMControllerELECTRICALCHARACTERISTICS(TA=25℃,VCC=18V,unlessotherwisenoted)SymbolParameterTestConditionsMinTyp.MaxUnitSupplyVoltage(VDD)IstartupVCCStartupCurrentVCC=UVLO(OFF)-1V,measureleakagecurrentintoVCC25uAI_VCC_OperationOperationCurrentVDD=18V,CS=4V,FB=3.5V,measureI(VCC)2.53mAI_VCC_BurstBurstCurrentCS=0V,FB=0.5V,measureI(VCC)0.60.7mAUVLO(ON)VCCUnderVoltageLockoutEnter6.87.37.8VUVLO(OFF)VCCUnderVoltageLockoutExit(Recovery)161718VVpull-upPull-upPMOSactive10VOVPVCCOverVoltageProtectionthresholdvoltageFB=3V,CS=0V.SlowlyrampVCC,untilnogateswitching.26.52829.5VFeedbackInputSection(FBPin)VFB_OpenVFBOpenLoopVoltage5.1VAvcsPWMinputgain∆VFB/∆VCS3.5V/VMaximumdutycycleMaxdutycycle@VCC=18V,VFB=3V,VCS=0V778083%Vref_greenThethresholdentergreenmode2.1VVref_burst_HThethr