品牌：ALLEGRO
批号：17+
数量:10000
封装:QFN
价格:面议
说明：全新原装现货，可出样品
IC特征：FeaturesandBenefits
?2-wireserialI2C?-compatibleinterface:control(write)and
status(read)
?LNBvoltages(16programmablelevels)compatiblewith
allcommonstandards
?Trackingswitch-modepowerconverterforlowestdissipation
?Integratedconverterswitchesandcurrentsensing
?Providesupto500mAperchanneland750mAtotal
?Staticcurrentlimitcircuitallowsfullcurrentatstartupand
13→18Voutputtransition;reliablystartswideloadrange
?Push-pulloutputstageminimizes13→18Vand18→13V
outputtransitiontimesforhighlycapacitiveloads
?Adjustablerise/falltimeviaexternaltimingcapacitor
?Built-intoneoscillator，factory-trimmedto22kHz
facilitatesDiSEqC?toneencoding，evenatno-load
?Fourmethodsof22kHztonegeneration，viaI2C?data
bitsand/orexternalpin
?22kHztonedetectorfacilitatesDiSEqC?2.0decoding
?Auxiliarymodulationinput
?LNBovercurrentwithtimer
?Diagnosticsforoutputvoltagelevel，inputsupplyUVLO，
andDiSEqC?toneoutput
?Cabledisconnectdiagnostic
De115;cription
Intendedforanaloganddigitalsatellitereceivers，thisdual
low-noiseblockconverterregulator(LNBR)isamonolithic
linearandswitchingvoltageregulator，specificallydesignedto
providethepowerandtheinterfacesignalstotwoLNBdown
convertersviacoaxialcables.TheA8292requiresfewexternal
components，withtheboostswitchesandcompensationcircuitry
integratedinsideofthedevice.Ahighswitchingfrequencyis
chosentominimizethesizeofthepassivefilteringcomponents，
furtherassistingincostreduction.Thehighlevelofcomponent
integrationensuresextremelylownoiseandripplefigures.
TheA8292hasbeendesignedforhighefficiency，utilizing
theAllegro?advancedBCDprocess.Theintegratedboost
switcheshavebeenoptimizedtominimizebothswitchingand
staticlosses.Tofurtherenhanceefficiency，thevoltagedro112;
acrossthetrackingregulatorshasbeenminimized.
TheA8292hasintegratedtonedetectioncapability，tosupport
fulltwo-wayDiSEqC?communications.Severalschemes
areavailableforgeneratingtonesignals，allthewaydown
tono-load，andusingeithertheinternalclockoranexternal
timesource
联系人:朱先生
手机:15219483667
电话:0755-21015360&23038182
传真:0755-23038182
地址:深圳市福田区华强北路赛格科技工业园4栋6C10
