DESCRIPTIONTheMT7910isahysteresiscurrentmodecontrolLEDdriverIC.TheMT7910operatesinconstantoff-timemode.ItallowsefficientoperationofHighBrightness(HB)LEDsfromvoltagesourcesrangingfrom14VDCupto450VDCor110VAC/220VAC.TheMT7910includesaPWMdimminginputthatcanacceptanexternalcontrolsignalwithadutyratioof0-100%andafrequencyofuptoafewkilohertz.Italsoincludesa0-250mVlineardimminginputwhichcanbeusedbothforlineardimmingandtemperaturecompensationoftheLEDcurrent.TheMT7910isideallysuitedforbuckLEDdrivers.SincetheMT7910operatesinhysteresiscurrentmodecontrol,thecontrollerachievesgoodoutputcurrentregulationwithouttheneedforanyloopcompensation.Further,withMaxicproprietarycontroltechnology(patentpending),MT7910achievesprecisionoutputcurrentaccuracyfrom85VAC~265VAC.PWMdimmingresponseislimitedonlybytherateofriseandfalloftheinductorcurrent,enablingveryfastriseandfalltimes.Frequencyjittering
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