HX2820

Super-SmallPackageVFMControlStep-upSwitchingRegulator

■GeneralDescription■Features

TheHX2820isaconstantfrequency,6-pinSOT23?Integrated80mΩPowerMOSFET

currentmodestep-upconverterintendedforsmall,low?2Vto20VInputVoltage

powerapplications.TheHX2820switchesat1.4MHzand?1.4MHzFixedSwitchingFrequency

allowstheuseoftiny,lowcostcapacitorsandinductors.?Internal3.5ASwitchCurrentLimit

Internalsoft-startresultsinsmallinrushcurrentand?AdjustableOutputVoltage

extendsbatterylife.?InternalCompensation

TheHX2820featuresautomaticshiftingtopulse?Upto28VOutputVoltage

frequencymodulationmodeatlightloads.TheHX2820?AutomaticPulseFrequencyModulationMode

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includesunder-voltagelockout,currentlimiting,and?atLightLoads

thermaloverloadprotectiontopreventdamageinthe?upto93%Efficiency

eventofanoutputoverload.■Applications

■PackageM

?Battery-PoweredEquipment

?SOT23-6L?Set-TopBoxed

?LCDBaisSupply

E

?DSLandCableModemsandRouters

?NetworkingcardspoweredfromPCIorPCIexpress

slots

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■TypicalApplicationCircuit

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