TM 10AHighlyIntegratedSupIRBuck IR3475 FEATURES DESCRIPTION TM TheIR3475SupIRBuck isaneasytouse,fullyintegrated InputVoltageRange:3Vto27V andhighlyefficientDC/DCvoltageregulator.Theonboard OutputVoltageRange:0.5Vto12V constantontimehystereticcontrollerandMOSFETsmake IR3475aspaceefficientsolutionthatdeliversupto10Aof Continuous10ALoadCapability preciselycontrolledoutputvoltage. ConstantOnTimeControl CompensationLoopnotRequired Programmableswitchingfrequency,softstart,and thermallycompensatedovercurrentprotectionallowsfor ExcellentEfficiencyatVeryLowOutputCurrents averyflexiblesolutionsuitableformanydifferent ProgrammableSwitchingFrequencyandSoftStart applicationsandanidealchoiceforbatterypowered applications. ThermallyCompensatedOverCurrentProtection PowerGoodOutput Additionalfeaturesincludeprebiasstartup,veryprecise 0.5Vreference,under/overvoltageshutdown,thermal PrecisionVoltageReference(0.5V,+/1%) protection,powergoodoutput,andenableinputwith EnableInputwithVoltageMonitoringCapability voltagemonitoringcapability. PrebiasStartUp ThermalShutDown APPLICATIONS Under/OverVoltageFaultProtection NotebookandDesktopComputers ForcedContinuousConductionModeOption ConsumerElectronicsSTB,LCD,TV,Printers VerySmall,LowProfile4mmx5mmQFNPackage 12Vand24VDistributedPowerSystems GeneralPurposePOLDCDCConverters GameConsolesandGraphicsCards EFFICIENCY BASICAPPLICATION 95% 90% 85% 80% 75% VIN = 19V 70% VIN = 12V 65% VIN = 8V 60% 55% 50% 45% 0.01 0.1 1 10 Load Current (A) Figure1:IR3475BasicApplicationCircuit Figure2:IR3475Efficiency 1 March27,2013 V2.2 PD97602 EfficiencyTM 10AHighlyIntegratedSupIRBuck IR3475 ORDERINGINFORMATION IR3475 Package Tape&ReelQty PartNumber M 750 IR3475MTR1PBF M 4000 IR3475MTRPBF PBFLeadFree TRTapeandReel MPackageType MARKINGINFORMATION 3475 Site/Date/MarkingCode YWW LotCode xxxxx Pin1Identifier PINDIAGRAM o = 32 C /W JA o = 2 C /W J -PCB 2 March27,2013 V2.2 PD97602