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TPIC74100-Q1BUCK/BOOSTSWITCH-MODEREGULATORwww.ti.comSLIS125–DECEMBER2006FEATURES•Switched5-VRegulatedOutputon5VgWith•Switch-ModeRegulatorCurrentLimit–5V±2%,NormalMode•ProgrammableSlewRateandFrequency–5V±3%,Low-PowerorCrossoverModeModulationforEMIConsideration••SwitchingFrequency,440kHz(typical)ResetFunctionWithDeglitchTimerandProgrammableDelay•InputOperatingRange,1.5Vto40V,(V)driver•AlarmFunctionforUndervoltageDetection–1-ALoad-CurrentCapabilityandIndication–200-mALoad-CurrentCapabilityDownto•ThermallyEnhancedPackageforEfficient2-VInput(Vdriver)HeatManagement–120-mALoad-CurrentCapabilityDownto1.5-VInput(Vdriver)APPLICATIONS•EnableFunction•AutomotiveElectronicControllerPower•Low-PowerOperationModeSupplyPWPHTSSOPPACKAGE(TOPVIEW)SCR1120SCR0Cboot22195Vg_ENABLECboot1318ENABLEVdriver417VlogicL1516GNDPGND615RmodL2714RESTVOUT813AOUT5Vg912RESETAIN1011CLPP0021-02DESCRIPTIONTheTPIC74100-Q1isaswitch-moderegulatorwithintegratedswitchesforvoltage-modecontrol.Withtheaidofexternalcomponents(LCcombination),thedeviceregulatestheoutputto5V±3%forawideinput-voltagerange.TheTPIC74100-Q1offersaresetfunctiontodetectandindicatewhenthe5-Voutputrailisoutsideofthespecifiedtolerance.ThisresetdelayisprogrammableusinganexternaltimingcapacitorontheRESTterminal.Additionally,analarm(AOUT)featureisactivatedwhentheinputsupplyrailVdriverisbelowaprescaledspecifiedvalue(setbytheAINterminal).TheTPIC74100-Q1hasafrequency-modulationschemetominimizeEMI.Theclockmodulatorpermitsamodulationoftheswitchingfrequencytoreduceinterferenceenergyinthefrequencyband.The5Vgoutputisaswitched5-VregulatedoutputwithinternalcurrentlimitingtopreventRESETfrombeingassertedwhenpoweringacapacitiveloadonthesupplyline.Thisfunctioniscontrolledbythe5Vg_ENABLEterminal.Ifthereisashorttogroundonthisoutput(5Vgoutput),theoutputself-protectsbyoperatinginachoppingmode.Thisdoes,however,increasetheoutputripplevoltageonVOUTduringthisfaultcondition.OrderingInformationPartNumberPackageTPIC7410
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