L298N中文资料

L298Jenuary2000DUALFULL-BRIDGEDRIVERMultiwatt15ORDERINGNUMBERS:L298N(MultiwattVert.)L298HN(MultiwattHoriz.)L298P(PowerSO20)BLOCKDIAGRAM.OPERATINGSUPPLYVOLTAGEUPTO46V.TOTALDCCURRENTUPTO4A.LOWSATURATIONVOLTAGE.OVERTEMPERATUREPROTECTION.LOGICAL”0”INPUTVOLTAGEUPTO1.5V(HIGHNOISEIMMUNITY)DESCRIPTIONTheL298isanintegratedmonolithiccircuitina15-leadMultiwattandPowerSO20packages.Itisahighvoltage,highcurrentdualfull-bridgedriverde-signedtoacceptstandardTTLlogiclevelsanddriveinductiveloadssuchasrelays,solenoids,DCandsteppingmotors.Twoenableinputsareprovidedtoenableordisablethedeviceindependentlyofthein-putsignals.Theemittersofthelowertransistorsofeachbridgeareconnectedtogetherandthecorre-spondingexternalterminalcanbeusedforthecon-nectionofanexternalsensingresistor.Anadditionalsupplyinputisprovidedsothatthelogicworksatalowervoltage.PowerSO201/13PINCONNECTIONS(topview)GNDInput2VSSN.C.Out1VSOut2Input1EnableASenseAGND1089765432131415161719182012111GNDD95IN239Input3EnableBOut3Input4Out4N.C.SenseBGNDABSOLUTEMAXIMUMRATINGSSymbolParameterValueUnitVSPowerSupply50VVSSLogicSupplyVoltage7VVI,VenInputandEnableVoltage–0.3to7VIOPeakOutputCurrent(eachChannel)–NonRepetitive(t=100μs)–Repetitive(80%on–20%off;ton=10ms)–DCOperation32.52AAAVsensSensingVoltage–1to2.3VPtotTotalPowerDissipation(Tcase=75°C)25WTopJunctionOperatingTemperature–25to130°CTstg,TjStorageandJunctionTemperature–40to150°CTHERMALDATASymbolParameterPowerSO20Multiwatt15UnitRthj-caseThermalResistanceJunction-caseMax.–3°C/WRthj-ambThermalResistanceJunction-ambientMax.13(*)35°C/W(*)Mountedonaluminumsubstrate1234567910118ENABLEBINPUT3LOGICSUPPLYVOLTAGEVSSGNDINPUT2ENABLEAINPUT1SUPPLYVOLTAGEVSOUTPUT2OUTPUT1CURRENTSENSINGATABCONNECTEDTOPIN813141512CURRENTSENSINGBOUTPUT4OUTPUT3INPUT4D95IN240AMultiwatt15PowerSO20L2982/13PINFUNCTIONS(refertotheblockdiagram)MW.15PowerSONameFunction1;152;19SenseA;SenseBBetweenthispinandgroundisconnectedthesenseresistortocontrolthecurrentoftheload.2;34;5Out1;Out2OutputsoftheBridgeA;thecurrentthatflowsthroughtheloadconnectedbetweenthesetwopinsismonitoredatpin1.46VSSupplyVoltageforthePowerOutputStages.Anon-inductive100nFcapacitormustbeconnectedbetweenthispinandground.5;77;9Input1;Input2TTLCompatibleInputsoftheBridgeA.6;118;14EnableA;EnableBTTLCompatibleEnableInput:theLstatedisablesthebridgeA(enableA)and/orthebridgeB(enableB).81,10,11,20GNDGround.912VSSSupplyVoltagefortheLogicBlocks.A100nFcapacitormustbeconnectedbetweenthispinandground.10;1213;15Input3;Input4TTLCompatibleInputsoftheBridgeB.13;1416;17Out3;Out4OutputsoftheBridgeB.Thecurrentthatflowsthroughtheloadconnectedbetweenthesetwopinsismonitoredatpin15.–3;18N.C.NotConnectedELECTRICALCHARACTERISTICS(VS=42V;VSS=5V,Tj=25°C;unlessotherwisespecified)SymbolParameterTestConditionsMin.Typ.Max.UnitVSSupplyVoltage(pin4)OperativeConditionVIH+2.546VVSSLogicSupplyVoltage(pin9)4.557VISQuiescentSupplyCurrent(pin4)Ven=H;IL=0Vi=LVi=H13502270mAmAVen=LVi=X4mAISSQuiescentCurrentfromVSS(pin9)Ven=H;IL=0Vi=LVi=H2473612mAmAVen=LVi=X6mAViLInputLowVoltage(pins5,7,10,12)–0.31.5VViHInputHighVoltage(pins5,7,10,12)2.3VSSVIiLLowVoltageInputCurrent(pins5,7,10,12)Vi=L–10μAIiHHighVoltageInputCurrent(pins5,7,10,12)Vi=H≤VSS–0.6V30100μAVen=LEnableLowVoltage(pins6,11)–0.31.5VVen=HEnableHighVoltage(pins6,11)2.3VSSVIen=LLowVoltageEnableCurrent(pins6,11)Ven=L–10μAIen=HHighVoltageEnableCurrent(pins6,11)Ven=H≤VSS–0.6V30100μAVCEsat(H)SourceSaturationVoltageIL=1AIL=2A0.951.3521.72.7VVVCEsat(L)SinkSaturationVoltageIL=1A(5)IL=2A(5)0.851.21.71.62.3VVVCEsatTotalDropIL=1A(5)IL=2A(5)1.803.24.9VVVsensSensingVoltage(pins1,15)–1(1)2VL2983/13Figure1:TypicalSaturationVoltagevs.OutputCurrent.Figure2:SwitchingTimesTestCircuits.Note:ForINPUTSwitching,setEN=HForENABLESwitching,setIN=H1)1)Sensingvoltagecanbe–1Vfort≤50μsec;insteadystateVsensmin≥–0.5V.2)Seefig.2.3)Seefig.4.4)Theloadmustbeapureresistor.ELECTRICALCHARACTERISTICS(continued)SymbolParameterTestConditionsMin.Typ.Max.UnitT1(Vi)SourceCurrentTurn-offDelay0.5Vito0.9IL(2);(4)1.5μsT2(Vi)SourceCurrentFallTime0.9ILto0.1IL(2);(4)0.2μsT3(Vi)SourceCurrentTurn-onDelay0.5Vito0.1IL(2);(4)2μsT4(Vi)SourceCurrentRiseTime0.1ILto0.9IL(2);(4)0.7μsT5(Vi)SinkCurrentTurn-offDelay0.5Vito0.9IL(3);(4)0.7μsT6(Vi)SinkCurrentFallTime0.9ILto0.1IL(3);(4)0.25μsT7(Vi)SinkCurrentTurn-onDelay0.5Vito0.9IL(3);(4)1.6μsT8(Vi)SinkCurrentRiseTime0.1ILto0.9IL(3);(4)0.2μsfc(Vi)CommutationFrequencyIL=2A2540KHzT1(Ven)SourceCurrentTurn-offDelay0.5Vento0.9IL(2);(4)3μsT2(Ven)SourceCurrentFallTime0.9ILto0.1IL(2);(4)1μsT3(Ven)SourceCurrentTurn-onDelay0.5Vento0.1IL(2);(4)0.3μsT4(Ven)SourceCurrentRiseTime0.1ILto0.9IL(2);(4)0.4μsT5(Ven)SinkCurrentTurn-offDelay0.5Vento0.9IL(3);(4)2.2μsT6(Ven)SinkCurrentFallTime0.9ILto0.1IL(3);(4)0.35μsT7(Ven)SinkCurrentTurn-onDelay0.5Vento0.9IL(3);(4)0.25μsT8(Ven)SinkCurrentRiseTime0.1ILto0.9IL(3);(4)0.1μsL2984/13Figure3:SourceCurrentDelayTimesvs.InputorEnableSwitching.Figure4:SwitchingTimesTestCircuits.Note:ForINPUTSwitching,setEN=HForENABLESwitching,setIN=LL2985/13Figure5:SinkCurrentDelayTimesvs.Input0VEnableSwitching.F