High-Efficiency Controller for Boost, SEPIC, and Flyback ...
LM3481VINISENCOMPFBAGNDUVLOVCCDRPGNDFA/S YNC/SD++VIN = 5VVOUT = 12VR7121 k:R8121 k:CC82 nFC8 390 k:RF220 k:RF1169 k:RSEN 20 m:CSEN1 nF1 PFCIN1, CIN2 150 PHIOUT = , COUT2 150 PFC9D1Q1ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand ,LM3481-Q1SNVS346F NOVEMBER2007 REVISEDNOVEMBER2014LM3481/ -Q1 high -EfficiencyControllerfor Boost, SEPICand FlybackDC-DCConverters11 Features1 LM3481QMMare Automotive-GradeProductsThatare AEC-Q100Grade1 Qualified( 40 C to+125 C OperatingJunctionTemperature) 10-LeadVSSOPPackage InternalPush-PullDriverWith1-A PeakCurrentCapability CurrentLimitand ThermalShutdown FrequencyCompensationOptimizedWithaCapac itorand a Resistor InternalSoftstart CurrentModeOperation AdjustableUndervoltageLockoutWithHystere sis PulseSkippingat LightLoads Key Specifications WideSupplyVoltageRangeof to 48 V 100-kHzto 1-MHzAdjustableandSynchronizableC
lm3481 isen v in comp fb agnd uvlo v cc dr pgnd fa/sync/sd + + v in = 5v v out = 12v r7 121 k : r8 121 k : c c 82 nf c8 390 pf r c 22.6 k : r f2 20 k : r f1 169 k : r fa
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