RY7308 30V 800mA 降压可调光LED驱动器 SOT89-5 深圳恒锐丰科技.pdf

RY7308

30V800mAStep-DownDimmableLEDDriver

Features

•Wide6Vto30VOperatingInputRange•500mΩLowRDS(ON)InternalPowerMOSFETs

•800mAContinuousOutputCurrent•Highefficiency(upto98%)

•Maximum1MHzSwitchingFrequency•AdjustableConstantLEDcurrent

•OverTemperatureProtection•PWMandAnalogDimming

•InherentOpen-CircuitLEDProtection•Typical5%OutputCurrentAccuracy

•High-sideCurrentSense•AvailableinSOT89-5Package

•HystereticControl:NoCompensation•-40°Cto+85°CTemperatureRange

Applications

•LowvoltagehalogenreplacementLEDs•Signs/EmergencyLighting

•Automotive/DecorativeLEDLighting•LEDBacklighting

•Low-VoltageHalogenReplacement•SELVLighting

GeneralDescription

TheRY7308isstep-downregulatorfordimmableLEDdriver,whichisdesignedincontinuouscurrentmodefor

drivingthehigh-brightnessLEDsfromawideinputvoltageof6Vto30V.TheRY7308employsahystereticcontrol

schemetoregulateLEDcurrent.Moreover,thecontrolschemeprovidesoptimalloopstabilizationandaveryquick

responsetime.TheRY7308implementsPWMandanalogdimmingtogetherontheEN/DIMpin.TheRY7308

includesunder-voltagelockoutandthermaloverloadprotectiontopreventdamageintheeventofanoutputoverload.

TheRY7308requiresaminimalnumberofreadilyavailable,externalcomponentsandisavailableinaspacesaving

SOT89-5package.

TypicalApplicationCircuit

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