只需一个电阻设置DC-DC转换器的正负输出

Manyelectronicsubsystems,suchasVFD(vacuumfluorescentdisplay),TFT-LCD,GPSorDSLapplications,requiremorethanjustasimplestep-downorstep-upDC/DCconverter.Theymayrequireinverting,noninvertingconvertersorboth.DesignersusuallyresorttodifferentregulatorICstocontrolvariouspolarityoutputs,thusincreasingtheinventorylist.TheLT®3580solvesthisproblembycontrollingeitherpositiveornegativeoutputsusingthesamefeedbackconfiguration.Itcontainsanintegrated2A,42Vswitchandpacksmanypopularfeaturessuchassoft-start,adjustablefrequency,synchronizationandawideinputrangeintoasmallfootprint.TheLT3580comesinan8-pin3mm×3mmDFNorMSOPpackagesandcanbeusedinmultipleconfigurationssuchasboost,SEPIC,flybackandCuktopologies.SingleResistorSetsPositiveorNegativeOutputforDC/DCConverter