L9305A中文资料

L9305A中文资料L9305AJanuary1992DUALHIGHCURRENTRELAYDRIVER.HIGHOUTPUTCURRENT.HYSTERESISINPUTCOMPARATORWITHWIDERANGECOMMONMODEOPERATIONANDGROUNDCOMPATIBLEINPUTS.INPUTCOMPARATORHYSTERESIS.INTERNALTHERMALPROTECTIONWITHHYSTERESIS.INTERNALOUTPUTOVERVOLTAGECLAMP-ING.SINGLESUPPLYVOLTAGE(3.5Vupto18V)DESCRIPTIONTheL9305Aisamonolithicinterfacecircuitwithdif-ferentialinputcomparatorandopencollectoroutputabletosinkhighcurrentspecificallytodriverelays,lamps,d.c.motors.Particularcarehasbeentakentoprotectthedeviceagainstdestructivefailures-shortcircuitofoutputstoVS,outputovervoltages,supplyovervoltage.1/6Abuiltinthermalshut-downswitchesoffthedevicewhentheIC’sinternaldissipationbecomestoogreatandthechiptemperatureexceedsasetsecuritythreshold.Ahysteresisinputcomparatorincreasestheinterfa-ce’snoiseimmunity,allowingthecorrectusealsoincriticalenvironmentsasautomotiveorindustrialap-plications.Powerdip(8+8)ORDERINGNUMBER:L9305ABLOCKDIAGRAMABSOLUTEMAXIMUMRATINGSSymbolParameterValueUnitV5SupplyVoltage(*)20VV7DriverSupplyVoltage26VIZSSupplyZenerClampCurrent(DC)(PULSED)(**)3080mAmAVIComparatorInputVoltageRange–0.2to24VVIDifferentialInputVoltage24VTj,TstgJunctionandStorageTemperature–55to150°CPtotPowerDissipationatTamb=85°C928mWIoOutputCurrentInt.limited(*)Themaximumallowedsupplyvoltagewithoutseriesresistorsislimitedbythebuilt-inzenerprotectiondiodes(**)Ton≤2.5ms;repetitiontime≥30ms.PINCONNECTION(topview)THERMALDATASymbolParameterValueUnitRthj-pinsThermalResistanceJunctiontopinsMax.15°C/WRthj-ambThermalResistanceJunctiontoAmbientMax.70°C/WL9305A2/6ELECTRICALCHARACTERISTICS(V5=14.4V,Tamb=25°C;refertoblockdiagramunlessotherwisespecified)SymbolParameterTestConditionsMin.Typ.Max.UnitV5SupplyVoltage3.518*VIS”st.by”SupplyCurrentVI+–VI–≥70mV58mAISONSupplyCurrentVI––VI+70mV1830mAVCZOutputClampingVoltage(foreachchannel)IOUT=1A2027VVZSSupplyVoltageClampIZS=10mA2027VVIHComparatorHysteresisVI+–VI–=200mVppf=1kHz2070mVIBInputBiasCurrentV+=V–=0V0.21μAIOSInputOffsetCurrentV+=V–=0V±20±200nACMRInputCommonModeRangeV5=3.5Vto18V0V5–1.6VISCOutputShortCircuitCurrentforEachChannelVI––VI+≥70mVVout=16.5VVout=6V0.85A2.5AICDDriverTransistorCurrentCapabilityVI––VI+≥70mVDCPulsed(**)300mA600mAVCSATOnStatusSaturationVoltageVI––VI+≥70mVICD=100mAICOUT=1.2A1VIOLOutputLeakageCurrentVI+–VI–≥70mV250μA*TON≤2.5ms;repetitiontime≥30ms.**Themaximumallowedsupplyvoltagewithoutlimitingresistorsislimitedbythebuilt-inprotectionzenerdiodesseeVCZ,VZSSpec.velues.TESTANDAPPLICATIONCIRCUITL9305A3/6APPLICATIONINFORMATIONS(refertoapplicationcircuit)D1andD2diodesarerequiredonlyforreversepo-larityprotection.IfVSmaybehigherthanVZSaresistorRSisneces-sarytolimitthezenercurrentIZS.Inordertodeter-mineRSvaluethefollowingequationscanbeused:VSMAX–VD1–VZSmin1)RS2)VSmin–VD1–RS–ISONMAXVSTminwherefromTamb=25°C:-VSMAXandVSminarethemaximumandminimumvaluesofpowersupplyvoltage-VD1istheforwarddiodeD1voltagedrop-VZSmin=20V-IZSMAX=30mAford.c.modeandIZSMAX=80mAforpulsedmode(seeAbsolutemaximumratings)-ISOMMAX=30mA-VSTmin=3.5VIfnoRSvaluecansatisfythesystem1),2)amorepowerfullexternalzenerDZ=18Visrequired.Then1)becomes:VSMAX–VD1–18RSwhereIDZMAXisthemaximumallowedDZcurrent.VAvoltagecannotbehigherthan20Votherwiseoutputovervoltageprotectionmaybeactivated.MoreverVAmustbelessthan16Vifshortcircuitprotectionisrequired.DZ2=22to24Visamandatoryforoutput7protec-tionifVSmaybehigherthan26V.MOUNTINGINSTRUCTIONTheL9305Aisassembledinanewplasticpackage,thePowerdip,inwhich8pins(from9to16)areat-tachedtotheframeandremovertheheatproducedbythechip.Figure2and3showtwowaysofheatsinking.Inthefirstcase,aPCboardcopperareaisusedasaheatsinkI=65mm.Whileinthesecondcase,thedeviceissolderedtoanexternalheatsink.Inbothexamples,thethermalresistancejunction-ambientis35°C/W.Figure2:ExampleofHeatsinkUsingPCBoardCopper(I=65mm).Figure3:ExampleofanExternalHeatsink.L9305A4/6L9305APOWERDIP16PACKAGEMECHANICALDATAmminchDIM.MIN.TYP.MAX.MIN.TYP.MAX.a10.510.020B0.851.400.0330.055b0.500.020b10.380.500.0150.020D20.00.787E8.800.346e2.540.100e317.780.700F7.100.280I5.100.201L3.300.130Z1.270.0505/6L9305AInformationfurnishedisbelievedtobeaccurateandreliable.However,SGS-THOMSONMicroelectronicsassumesnoresponsibilityfortheconsequencesofuseofsuchinformationnorforanyinfringementofpatentsorotherrightsofthirdpartieswhichmayresultfromitsuse.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofSGS-THOMSONMicroelectronics.Specifica-tionsmentionedinthispublicationaresubjecttochangewithoutnotice.Thispublicationsupersedesandreplacesallinformationpre-viouslysupplied.SGS-THOMSONMicroelectronicsproductsarenotauthorizedforuseascriticalcomponentsinlifesupportdevicesorsystemswithoutexpresswrittenapprovalofSGS-THOMSONMicroelectronics.?1994SGS-THOMSONMicroelectronics-AllRightsReservedSGS-THOMSONMicroelectronicsGROUPOFCOMPANIESAustralia-Brazil-France-Germany-HongKong-Italy-Japan-Korea-Malaysia-Malta-Morocco-TheNetherlands-Singapore-Spain-Sweden-Switzerland-Taiwan-Thaliand-UnitedKingdom-U.S.A.6/6