高电压LED驱动器提供软件控制强度

摘要：该电路适应的雪崩光电二极管偏置电源IC（APDS）驱动高压的LED串，从而提供可调电流，软件关机，和逻辑开路故障指示。

Maxim>AppNotes>DISPLAYDRIVERSKeywords:DACs,D/Aconverters,LEDdrivers,software-controlledlightintensityMar14,2005APPLICATIONNOTE3445High-VoltageLEDDriverProvidesSoftware-ControlledIntensityAbstract:Thiscircuitadaptsabias-supplyICforavalanchephotodiodes(APDs)todriveahigh-voltagestringofLEDs,therebyprovidingadjustablecurrent,softwareshutdown,andlogicindicationofopen-circuitfaults.RecentadvancesinoperatingefficiencyhaveexpandedtheuseofLEDsfrommereindicatorstobeingadrivingforceinelectroniclighting.Increasedreliabilityandruggedness(comparedtootherlightingtechnologies)givestheLEDabrightfuture,indeed.ManyICshavebeenintroducedinrecentyearsfordrivingLEDs,buttheissueofd