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1、Orderingnumber:ENA1998Bi-CMOSLSILV8727PWMCurrentControlSteppingMotorDriverOverviewTheLV8727isaPWMcurrent-controlledmicrostepbipolarsteppingmotordriver.ThisdrivercandoeightwaysofmicrostepresolutionofHalf,1/8,1/16,1/32,1/64,1/128,1/10,1/20Step,andcandrivesimplybythestepinput.Features•Single
2、-channelPWMcurrentcontrolsteppingmotordriver.•Outputon-resistance(upperside:0.25Ω;lowerside:0.15Ω;totalofupperandlower:0.4Ω;Ta=25°C,IO=4.0A)•Half,1/8,1/16,1/32,1/64,1/128,1/10,1/20Stepareselectable.•Advancetheexcitationstepwiththeonlystepsignalinput.•BiCDMOSprocessIC.•Availableforwardreve
3、rsecontrol.•IOmax=4.0A•Thermalshutdowncircuit.•Inputpulldownresistance•Withresetpinandenablepin.SpecificationsAbsoluteMaximumRatingsatTa=25°CParameterSymbolConditionsRatingsUnitSupplyvoltageVMmax50VOutputcurrentIOmax4AOutputpeakcurrentIOpeaktw≤10ms,duty20%4.6ALogicinputvoltageVINmax6VVREF
4、inputvoltageVREFmax6VMO/DOWNpininputvoltageVMO/VDOWNmax6VAllowablepowerdissipationPdmaxIndipendentIC2.45WOperatingtemperatureTopr-30to+85°CStoragetemperatureTstg-55to+150°CCaution1)Absolutemaximumratingsrepresentthevaluewhichcannotbeexceededforanylengthoftime.Caution2)Evenwhenthedeviceisu
5、sedwithintherangeofabsolutemaximumratings,asaresultofcontinuoususageunderhightemperature,highcurrent,highvoltage,ordrastictemperaturechange,thereliabilityoftheICmaybedegraded.Pleasecontactusforthefurtherdetails.AnyandallSANYOSemiconductorCo.,Ltd.productsdescribedorcontainedhereinare,withr
6、egardto"standardapplication",intendedfortheuseasgeneralelectronicsequipment.Theproductsmentionedhereinshallnotbeintendedforuseforany"specialapplication"(medicalequipmentwhosepurposeistosustainlife,aerospaceinstrument,nuclearcontroldevice,burningappliances,transportationmachine,trafficsign
7、alsystem,safetyequipmentetc.)thatshallrequireextremelyhighlevelofreliabilityandcandirectlythreatenhumanlivesincaseoffailureormalfunctionoftheproductormaycauseharmtohumanbodies,norshalltheygrantanyguaranteethereof.Ifyoushouldintendtouseourproductsfornewintroductionor
