EUP3284芯片3A同步降压稳压器-骊微电子

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1、深圳市骊微电子科技有限公司DESCRIPTION现货TEL:13808858392杜SFEATURESTheEUP3284Gisasynchronouscurrentmodebuck3AOutputCurrentregulatorcapableofdriving3AcontinuousloadcurrentAutomaticPulseSkippingModeatLightLoadwithexcellentlineandloadregulation.TheEUP3284GIntegrated140m/100mDMOSSwi

2、tchescanoperatewithaninputrange4.5Vto32Vandtheoutputcanbeexternallysetfrom0.92Vto20Vwitha4.5Vto32VInputOperatingRangeresistordivider.OutputAdjustablefrom0.92Vto20VFaultconditionprotectionincludescycle-by-cycleUpto94%Efficiencycurrentlimitingandthermalshutdown.Ins

3、hutdown3AShutdownCurrentmodetheregulatordraws3Aofsupplycurrent.Fixed340KHzFrequencyProgrammablesoft-startminimizestheinrushsupplyProgrammableSoft-Startcurrentandtheoutputovershootatinitialstartup.AutomaticpulseskippingmodeoperationincreaseThermalShutdownandOvercu

4、rrentProtectionefficiencyatlightloads.InputSupplyUndervoltageLockoutTheEUP3284Grequireaminimumnumberofexternal220nsMinimumOnTimecomponents.AvailableinSOP-8(EP)PackageRoHSCompliantand100%Lead(Pb)-FreeHalogen-FreeAPPLICATIONSDistributedPowerSystemsNetworkingSystems

5、PCMonitorsPortableElectronicsTypicalApplicationCircuitFigure1.12Vto3.3V/5VApplicationCircuitEUP3284GVer1.0May20171深圳市骊微电子科技有限公司TypicalApplicationCircuit(continued)Figure2.32Vto3.3V/5VApplicationCircuitPinConfigurationsPackageTypePinConfigurationsSOP-8(EP)PinDescr

6、iptionPINPINNAMEDESCRIPTIONHigh-SideGateDriveBoostInput.BSsuppliesthedriveforthehigh-sideN-Channel1BSDMOSswitch.Connecta0.01µForgreatercapacitorfromSWtoBStopowerthehighsideswitch.InputSupplyPin.INsuppliesthepowertotheIC,aswellasthestep-downconverterswitches.Drive

7、INwitha4.5Vto32Vpowersource.BypassINtoGNDwitha2INsuitablylargecapacitortominimizeinputrippletotheIC.SeeInputCapacitorSectionoftheapplicationsnotes.3SWPowerSwitchingOutput.ConnecttheoutputLCfilterfromSWtotheoutputload.Ground.GNDpinshouldbeconnectedtotheexposedther

8、malpadforproper4GNDoperation.ThispowerthermalpadshouldbeconnectedtoPCBgroundplaneusing9(ExposedPad)multipleviasforgoodthermalperf