Transcription of www.ti.com 2-A, WIDE INPUT RANGE, STEP-DOWN …
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www.ti.com 2-A, WIDE INPUT RANGE, STEP-DOWN …
%IOutput Current AO--Efficiency vs Output CurrentSimplified Schematic25055657585VI= 12 APRIL2006 REVISEDSEPTEMBER20132-A, WIDE INPUTRANGE,STEP-DOWNCONVERTERC heckfor Samples:TPS54201 FEATURESAPPLICATIONS V to 36 V Consumer:Set-topBox,DVD,LCDD isplays Up to 2-A Continuous(3-APeak)Output Industrialand Car AudioPowerSuppliesCurrent BatteryChargers,HighPowerLEDS upply HighEfficiencyup to 95%Enabledby 110-m 12-V/24-VDistributedPowerSystemsIntegrat edMOSFETS witch WideOutputVoltageRange:AdjustableDownDES CRIPTIONto a high-output-currentPWMconverterthat integratesa low resistancehighside the substratewithPartsCountthe listedfeaturesis a high performancevoltageerror Fixed500-kHzSwitchingFrequencyfor Smallamplifierthatprovidestightvoltagere gulationFilterSizeaccuracyundertransient conditions;an undervoltage- ImprovedLineRegulationand Transientlockoutcircuitto preventstart-upuntilthe V; an internallyset slow-startResponseby InputVoltageFeedForwardcircuitto limitinrushcurrents;and a voltagefeed- SystemProtectedby OverCurrentLimiting,forwardcircuitto improvethe ThermalUsingthe ENApin,shutdownsupplycurrentisShutdownre ducedto 18 A 40 C to 125 C OperatingJunctionactive-highenable,overc urrentlimiting,overvoltageTemperatureRan geprotectionand reducedesigncomplexityandexternalcompone ntcount,the Availablein Small8.
VIN NC NC ENA GND VSENSE BOOT PH TPS5420 VIN VOUT 95 60 70 80 90 100 0 0.5 1 1.5 2.5 3 % I Output Current AO - - Simplified Schematic Efficiency vs Output Current 2 50 55 65 75 85 V I = 12 V TPS5420 www.ti.com SLVS642E –APRIL 2006–REVISED SEPTEMBER 2013 2-A, WIDE INPUT RANGE, STEP-DOWN CONVERTER
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