PD97746 16AHighlyIntegratedSupIRBuck IR3895 SingleInputVoltage,SynchronousBuckRegulator - 1 -P FEATURES DESCRIPTION TM TheIR3895SupIRBuck isaneasytouse,fully Single5Vto21Vapplication integratedandhighlyefficientDC/DCregulator. WideInputVoltageRangefrom1.0Vto21Vwith TheonboardPWMcontrollerandMOSFETsmake externalVcc IR3895aspaceefficientsolution,providingaccurate powerdelivery. OutputVoltageRange:0.5Vto0.86Vin EnhancedLine/LoadRegulationwithFeedForward IR3895isaversatileregulatorwhichoffers ProgrammableSwitchingFrequencyupto1.5MHz programmableofswitchingfrequencyandthefixed internalcurrentlimitwhileoperatesinwideinputand InternalDigitalSoftStart/SoftStop outputvoltagerange. EnableinputwithVoltageMonitoringCapability Theswitchingfrequencyisprogrammablefrom300kHz ThermallyCompensatedCurrentLimitwithrobust to1.5MHzforanoptimumsolution. hiccupmodeovercurrentprotection SmartinternalLDOtoimprovelightloadandfullload Italsofeaturesimportantprotectionfunctions,suchas efficiency PreBiasstartup,thermallycompensatedcurrentlimit, ExternalSynchronizationwithSmoothClocking overvoltageprotectionandthermalshutdowntogive requiredsystemlevelsecurityintheeventoffault EnhancedPreBiasStartUp conditions. PrecisionReferenceVoltage(0.5V+/0.5%)with marginingcapability VpforTrackingApplications(source/sinkcapability APPLICATIONS 16A) NetcomApplications IntegratedMOSFETdriversandBootstrapDiode EmbeddedTelecomSystems ThermalShutDown ServerApplications ProgrammablePowerGoodOutputwithtracking StorageApplications capability DistributedPointofLoadPowerArchitectures MonotonicStartUp o o Operatingtemp:40 C<Tj<125 C SmallSize:5mmx6mmPQFN Leadfree,HalogenfreeandRoHSCompliant BASICAPPLICATION Figure1:IR3895BasicApplicationCircuit Figure2:IR3895Efficiency 1 JANUARY18,2013 DATASHEET Rev3.4PD97746 16AHighlyIntegratedSupIRBuck IR3895 SingleInputVoltage,SynchronousBuckRegulator - 2 -P ORDERINGINFORMATION Package Tape&ReelQty PartNumber M 750 IR3895MTR1PBF IR3895 M 4000 IR3895MTRPBF PBFLeadFree TR/TR1TapeandReel MPackageType PINDIAGRAM 5mx6mmPOWERQFN (TOPVIEW) 30CW/ JA 2/CW JP- CB 2 JANUARY18,2013 DATASHEET Rev3.4 Fb Vref Comp Gnd Rt/Sync S Ctrl PGood