TheMT7910isahysteresiscurrentmodecontrolLEDdriverIC.TheMT7910operatesinconstantoff-timemode.ItallowsefficientoperationofHighBrightness(HB)LEDsfromvoltagesourcesrangingfrom14VDCupto450VDCor110VAC/220VAC.TheMT7910includesaPWMdimminginputthatcanacceptanexternalcontrolsignalwithadutyratioof0-100%andafrequencyofuptoafewkilohertz.Italsoincludesa0-250mVlineardimminginputwhichcanbeusedbothforlineardimmingandtemperaturecompensationoftheLEDcurrent.TheMT7910isideallysuitedforbuckLEDdrivers.SincetheMT7910operatesinhysteresiscurrentmodecontrol,thecontrollerachievesgoodoutputcurrentregulationwithouttheneedforanyloopcompensation.Further,withMaxicproprietarycontroltechnology(patentpending),MT7910achievesprecisionoutputcurrentaccuracyfrom85VAC~265VAC.PWMdimmingresponseislimitedonlybytherateofriseandfalloftheinductorcurrent,enablingveryfastriseandfalltimes.FrequencyjitteringisusedtoreducetheEMI.FEATURESProprietaryconstant-currentcontrolWideinputrangefrom14VDCto450VDCor110VAC/220VACApplicationfromafewmAtomorethan1AoutputUpto90%efficiencyUptohundredsofLEDsLinearandPWMdimmingcapabilityRequiresfewexternalcomponentsforoperationTemperaturecompensationtoregulateLEDcurrentEmbeddedOver-temperature,LEDopencircuit,LEDshort-circuitprotectionSOP-8packageAPPLICATIONDC/DCorAC/DCLEDdriverapplicationsRGBbacklightingLEDdriverGeneralpurposeconstantcurrentsourceSignalanddecorativeLEDlightingE14/E27/PAR30/PAR38/GU10LEDlamp