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A1101,A1102,A1103,A1104,andA1106Continuous-TimeSwitchFamilyFeaturesandBenefitsContinuous-timeoperationFastpower-ontimeLownoiseStableoperationoverfulloperatingtemperaturerangeReversebatteryprotectionSolid-statereliabilityFactory-programmedatend-of-lineforoptimumperformanceRobustEMCperformanceHighESDratingRegulatorstabilitywithoutabypasscapacitorDescriptionTheAllegro A1101-A1104andA1106Hall-effectswitchesarenextgenerationreplacementsforthepopularAllegro312xand314xlinesofunipolarswitches.TheA110xfamily,producedwithBiCMOStechnology,consistsofdevicesthatfeaturefastpower-ontimeandlow-noiseoperation.Deviceprogrammingisperformedafterpackaging,toensureincreasedswitchpointaccuracybyeliminatingoffsetsthatcanbeinducedbypackagestress.UniqueHallelementgeometriesandlow-offsetamplifiershelptominimizenoiseandtoreducetheresidualoffsetvoltagenormallycausedbydeviceovermolding,temperatureexcursions,andthermalstress.TheA1101-A1104andA1106Hall-effectswitchesincludethefollowingonasinglesiliconchip:voltageregulator,Hall-voltagegenerator,small-signalamplifier,Schmitttrigger,andNMOSoutputtransistor.Theintegratedvoltageregulatorpermitsoperationfrom3.8to24V.Theextensiveon-boardprotectioncircuitrymakespossiblea 30Vabsolutemaximumvoltageratingforsuperiorprotectioninautomotiveandindustrialmotorcommutationapplications,withoutaddingexternalcomponents.Alldevicesinthefamilyareidenticalexceptformagneticswitchpointlevels.ThesmallgeometriesoftheBiCMOSprocessallowthesedevicestobeprovidedinultrasmallpackages.Thepackagestylesavailableprovidemagneticallyoptimizedsolutionsformostapplications.PackageLHisanSOT23W,aminiaturelow-profilesurface-mountpackage,whilepackageUAisathree-leadultraminiSIPforthrough-holemounting.Eachpackageislead(Pb)free,with100%mattetinplatedleadframes.ReplacementDeviceCharacteristicsTableDeviceA110xCharacteristicsBOPBRPHysLegacyReplacementMinMaxMinMaxMinMax3141A1101301751014520803142A11021152456019030803143A110320535515030030803144A1104354502543020-3121A110626043016033070140FunctionalBlockDiagram