L293中文资料



 

SLRS008C−SEPTEMBER1986−REVISEDNOVEMBER20041POSTOFFICEBOX655303•DALLAS,TEXAS75265
FeaturingUnitrodeL293andL293DProductsNowFromTexasInstruments
WideSupply-VoltageRange:4.5Vto36V
SeparateInput-LogicSupply
InternalESDProtection
ThermalShutdown
High-Noise-ImmunityInputs
FunctionallySimilartoSGSL293andSGSL293D
OutputCurrent1APerChannel(600mAforL293D)
PeakOutputCurrent2APerChannel(1.2AforL293D)
OutputClampDiodesforInductiveTransientSuppression(L293D)description/orderinginformationTheL293andL293Darequadruplehigh-currenthalf-Hdrivers.TheL293isdesignedtoprovidebidirectionaldrivecurrentsofupto1Aatvoltagesfrom4.5Vto36V.TheL293Disdesignedtoprovidebidirectionaldrivecurrentsofupto600-mAatvoltagesfrom4.5Vto36V.Bothdevicesaredesignedtodriveinductiveloadssuchasrelays,solenoids,dcandbipolarsteppingmotors,aswellasotherhigh-current/high-voltageloadsinpositive-supplyapplications.AllinputsareTTLcompatible.Eachoutputisacompletetotem-poledrivecircuit,withaDarlingtontransistorsinkandapseudo-Darlingtonsource.Driversareenabledinpairs,withdrivers1and2enabledby1,2ENanddrivers3and4enabledby3,4EN.Whenanenableinputishigh,theassociateddriversareenabled,andtheiroutputsareactiveandinphasewiththeirinputs.Whentheenableinputislow,thosedriversaredisabled,andtheiroutputsareoffandinthehigh-impedancestate.Withtheproperdatainputs,eachpairofdriversformsafull-H(orbridge)reversibledrivesuitableforsolenoidormotorapplications.ORDERINGINFORMATIONTAPACKAGE†ORDERABLEPARTNUMBERTOP-SIDEMARKINGHSOP(DWP)Tubeof20L293DWPL293DWP0°Cto70°CPDIP(N)Tubeof25L293NL293N0°Cto70°CPDIP(NE)Tubeof25L293NEL293NEPDIP(NE)Tubeof25L293DNEL293DNE†Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat2004,TexasInstrumentsIncorporated  !#$%&!'#('!!$#!!$#)###*#''+,('!$!#-'##!#&,!&'##-&&$##(Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.HEATSINKANDGROUNDHEATSINKANDGROUND123456781615141312111091,2EN1A1Y2Y2AVCC2VCC14A4Y3Y3A3,4ENL293...NORNEPACKAGEL293D...NEPACKAGE(TOPVIEW)123456789101112131428272625242322212019181716151,2EN1A1YNCNCNCNCNC2Y2AVCC2VCC14A4YNCNCNCNCNC3Y3A3,4ENL293...DWPPACKAGE(TOPVIEW)HEATSINKANDGROUNDHEATSINKANDGROUND

 

SLRS008C−SEPTEMBER1986−REVISEDNOVEMBER20042POSTOFFICEBOX655303•DALLAS,TEXAS75265description/orderinginformation(continued)OntheL293,externalhigh-speedoutputclampdiodesshouldbeusedforinductivetransientsuppression.AVCC1terminal,separatefromVCC2,isprovidedforthelogicinputstominimizedevicepowerdissipation.TheL293andL293Darecharacterizedforoperationfrom0°Cto70°C.blockdiagram103456789101112131415161210110243MMM101010VCC2VCC1NOTE:OutputdiodesareinternalinL293D.FUNCTIONTABLE(eachdriver)INPUTS†OUTPUTAENOUTPUTYHHHLHLXLZH=highlevel,L=lowlevel,X=irrelevant,Z=highimpedance(off)†Inthethermalshutdownmode,theoutputisinthehigh-impedancestate,regardlessoftheinputlevels.

 

SLRS008C−SEPTEMBER1986−REVISEDNOVEMBER20043POSTOFFICEBOX655303•DALLAS,TEXAS75265logicdiagramÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ217109153611141A1,2EN2A3A3,4EN4A1Y2Y3Y4Yschematicsofinputsandoutputs(L293)InputVCC2OutputGNDTYPICALOFALLOUTPUTSEQUIVALENTOFEACHINPUTVCC1CurrentSourceGND

 

SLRS008C−SEPTEMBER1986−REVISEDNOVEMBER20044POSTOFFICEBOX655303•DALLAS,TEXAS75265schematicsofinputsandoutputs(L293D)InputVCC2OutputGNDTYPICALOFALLOUTPUTSEQUIVALENTOFEACHINPUTVCC1CurrentSourceGNDabsolutemaximumratingsoveroperatingfree-airtemperaturerange(unlessotherwisenoted)†Supplyvoltage,VCC1(seeNote1)36V...........................................................Outputsupplyvoltage,VCC236V................................................................Inputvoltage,VI7V............................................................................Outputvoltagerange,VO−3VtoVCC2+3V......................................................Peakoutputcurrent,IO(nonrepetitive,t≤5ms):L293±2A..........................................Peakoutputcurrent,IO(nonrepetitive,t≤100µs):L293D±1.2A....................................Continuousoutputcurrent,IO:L293±1A.........................................................Continuousoutputcurrent,IO:L293D±600mA....................................................Packagethermalimpedance,θJA(seeNotes2and3):DWPpackageTBD°C/W.......................Npackage67°C/W............................NEpackageTBD°C/W.........................Maximumjunctiontemperature,TJ150°C.........................................................Storagetemperaturerange,Tstg−65°Cto150°C...................................................†Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditio