地址锁存器8282ALLEGRO

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1、查询8281供应商DataSheet8281AND27448.2c8282LNBSUPPLYANDCONTROL-VOLTAGEREGULATORSIntendedforanaloganddigitalsatellitereceivers,theselow-noiseA8282SLBblockconverterregulators(LNBRs)aremonolithiclinearandswitchingvoltageregulatorsspecificallydesignedtoprovidethepowerandNC124EXTMinterfacesignalstotheLNBd

2、ownconverterviathecoaxialcable.IftheOLF223VINTdeviceisinstandbymode(ENterminallow),theregulatoroutputisdisabled,allowingtheantennadownconverterstobesuppliedorVBULK322PUMPXcontrolledbyothersatellitereceiverssharingthesamecoaxialcable.InNC421VPUMPthismode,thedevicewilllimittheoutputreversecurrent

3、.PUMPCHARGENC520CPUMPTheA8281SLBoutputissetto13or18-VbytheVSELterminal.Itissuppliedina16-leadSOICpower-tabpackage.ThepowertabsareatGND619GNDgroundpotentialandneednoelectricalisolation.GND718GNDTheA8282SLBoutputissetto12,13,18,or20-VbytheVSELterminals.Additionally,itispossibletoincreasetheselect

4、edvoltagebySENSE817ENT1-Vtocompensateforthevoltagedropinthecoaxialcable(LLCLNB9916ENterminalhigh).Itissuppliedina24-leadSOICpower-tabpackage.Thepowertabsareatgroundpotentialandneednoelectricalisolation.LX10BUCK15VSEL0TheA8282SLBisanimprovedversionoftheA8283SLB,withoutaVIN11REG.14VSEL1bypassswit

5、ch.VOLTAGECONTROLTCAP1213LLCFEATURESDwg.PP-072-2■LNBselectionandstandbyfunction■Built-intoneoscillatorfactorytrimmedto22-kHz,facilitatesDiSEqC™(atrademarkofEUTELSAT)encoding■Trackingswitch-modepowerconverterforlowestdissipationABSOLUTEMAXIMUMRATINGS■Externallyadjustableshort-circuitprotectionat

6、TA=+25°C■LNBshort-circuitprotectionanddiagnosticsSupplyVoltage,VIN...........................47-V■AuxiliarymodulationinputOutputCurrent,ILNB....InternallyLimited■Internalover-temperatureprotectionOutputVoltageRange,VLNB..-1-Vto+22-V■Reverse-currentprotectionLogicInputVoltageRange,VI............

7、.......................-0.3-Vto+7-V■Cablelengthcompensation(A8282SLBonly)FlagOutputVoltage,VOLF...................7-VOperatingTemperatureRange,TA.................................-20°Cto+85°CThesedevicesincorporatefeaturesthathavep