8-100V车灯驱动方案--大电流降压恒流LED驱动IC、过EMC测试(FP7175)

FP7175LEDDriverwithAverage-ModeConstantCurrentControlThisdatasheetcontainsnewproductinformation.FeelingTechnologyreservestherightstomodifytheproductspecificationwithoutnotice.Noliabilityisassumedasaresultoftheuseofthisproduct.Norightsunderanypatentaccompanythesalesoftheproduct.Website:±2%.TheFP7175canbepoweredfroman8.0-100Vsupply.PWM&LineardimminginputisprovidedthatacceptsanexternalcontrolTTLcompatiblesignal.Theoutputcurrentcanbeprogrammedbyaninternal250mVreference.FeaturesFastAverageCurrentControlInternal8to100VLinearRegulatorLinearandPWMDimmingCapabilityOutputShortCircuitProtectionwithSkipModeRequiresFewExternalComponentsforOperationApplicationsDC/DCorAC/DCLEDDriverApplicationsLEDStreetLightingBackLightingofFlatPanelDisplaysGeneralPurposeConstantCurrentSourceSignageandDecorativeLEDLightingChargersTypicalApplicationCircuitVDDDIMVINCSGNDGATEFP7175Linear&PWMDimmingLED+LED-VINGNDFP7175Thisdatasheetcontainsnewproductinformation.FeelingTechnologyreservestherightstomodifytheproductspecificationwithoutnotice.Noliabilityisassumedasaresultoftheuseofthisproduct.Norightsunderanypatentaccompanythesalesoftheproduct.Website:=0.167OTPPinDescriptionsSOT23-6L123654GATEVINGNDCSCBXXXTopViewDIMVDDNameNo.I/ODescriptionGATE1OThispinistheoutputGATEdriverforanexternalN-channelpowerMOSFET.GND2PGroundreturnforallinternalcircuitry.CS3IThispinisthecurrentsensepinusedtosensetheFETcurrentbymeansofanexternalsenseresistor.VIN4PThispinistheinputofan8-100Vlinearregulator.DIM5IThispinisthelinear&PWMdimminginputoftheIC.VDD6IThisisthepowersupplypinforallinternalcircuits.FP7175Thisdatasheetcontainsnewproductinformation.FeelingTechnologyreservestherightstomodifytheproductspecificationwithoutnotice.Noliabilityisassumedasaresultoftheuseofthisproduct.Norightsunderanypatentaccompanythesalesoftheproduct.Website::Waferlotnumber’slasttwodigitsForExample:XX48686Year:Productionyear’slastdigitPartNumberCode:Partnumberidentificationcodeforthisproduct.Itshouldbealways“CB”.FP7175Thisdatasheetcontainsnewproductinformation.FeelingTechnologyreservestherightstomodifytheproductspecificationwithoutnotice.Noliabilityisassumedasaresultoftheuseofthisproduct.Norightsunderanypatentaccompanythesalesoftheproduct.Website:°C~+85°CSOT23-6L3000EATape&ReelAbsoluteMaximumRatingsParameterSymbolConditionsMin.Typ.Max.UnitPowerSupplyVoltageVINVINtoGND100VVDDVDDtoGND8.5VCS,DIM,GATE-0.3VDD-0.3VVAllowablePowerDissipationPDSOT23-6LTA≦+25°C455mWJunctiontoAmbientThermalResistanceθJA220°C/WOperatingTemperature-25+85°CStorageTemperatureTSSOT23-6L-40+150°CSOT23-6LLeadTemperature(soldering,10sec)+260°CIRRe-flowSolderingCurveFP7175Thisdatasheetcontainsnewproductinformation.FeelingTechnologyreservestherightstomodifytheproductspecificationwithoutnotice.Noliabilityisassumedasaresultoftheuseofthisproduct.Norightsunderanypatentaccompanythesalesoftheproduct.Website:°CDCElectricalCharacteristics(VIN=11V,TA=25°C,unlessotherwisenoted)ParameterSymbolConditionsMin.Typ.Max.UnitInternalRegulatorInternallyregulatedvoltageVDDVIN=8V,IDD(ext)=0,500pFatGATE;DIM=VDD7.257.57.75VLineregulationofVDDΔVDD,lineVIN=8–100V,IDD(ext)=0,500pFatGATE;DIM=VDD0-1.0VLoadregulationofVDDΔVDD,loadIDD(ext)=0–0.6mA,500pFatGATE;DIM=VDD0100mVVDDundervoltagelockoutthresholdUVLOVDDrising6.5VVDDundervoltagelockouthysteresisΔUVLOVDDfalling500mVPWMDimmingPinDIMinputlowvoltageVEN(lo)VIN=8-100V0.1VPinDIMinputhighvoltageVEN(hi)VIN=8-100V1.6VAverageCurrentSenseLogicCurrentsensereferencevoltageVCS245250255mVDIM-to-CSvoltageratioAV(DIM)0.167DIM-to-CSvoltageoffsetAVDIM(OFFSET)Offset=VCS–AV(DIM)‧VDIMVDIM=1.2V010mVCSthresholdtempregulation5mVDIMinputvoltage,shutdownVDIM(OFF)200mVDIMinputvoltage,enable△VDIM(OFF)250mVCurrentsenseblankingintervalTBLANK150320nsMinimumsteady-statedutycycleTON(min)CS=VCS+30mV1000nsShortCircuitProtectionHiccupthresholdvoltageVCS495550605mVCurrentlimitdelayCS-GATETDELAYCS=VCS+30mV150nsShortcircuithiccuptimeTHICCUP450550650usMinimumon-time(shortcircuit)TON(min)CS=VDD600nsGATEDriverGATEsourcingcurrentISOURCEVGATE=0V,VDD=7.5V165mAGATEsinkingcurrentISINKVGATE=VDD,VDD=7.5V165mAGATEoutputrisetimetRISECGATE=500