LED Lighting - Beriled

Previous Page | Contents | Zoom in | Zoom out | Front Cover | Search Issue | Subscribe | Next PageABE FMaGSHigh Performance. Low Power.Energy-Efficient LED Lighting SolutionsNational’s new low-side, constant-current LED driver offers integrated thermal controlto increase system reliability. The thermal foldback feature of National’s LM3424 LEDdriver provides a more robust thermal design to extend the life of the LEDs, making it anideal solution for a variety of outdoor, automotive, and indoor lighting applications.NominalCurrentLED CurrentTemperatureBreakpointLED Temperature© 2009, National Semiconductor Corporation. National Semiconductor, , PowerWise, and WEBENCH are registered trademarks. All rights reserved.Thermal ManagementSince thermal design greatlyimpacts the light outputand lifetime of the LEDs,a well-designed thermalsystem is critical. TheLM3424’s thermal foldbackfeature eliminates theneed for external thermalmanagement circuitry,allowing for a more robustand reliable thermal systemand extending the life of theLEDs.Easy to UseWith National’s WEBENCH ®LED Designer online tool,designers can use theLM3424’s thermal foldbackfeature to visualize thedesign’s behavior at userselectedLED temperaturebreakpoints for easy andquick development ofa thermal managementsystem.Flexible DesignNational’s LM3424 LEDdriver, with a wide inputvoltage range, can be easilyconfigured in buck, boost,buck-boost, and SEPICtopologies with minimaladjustments. Driving amaximum of 18 LEDs inone string, the LM3424gives designers flexibilitywhile providing up to 96%efficiency and accuratecurrent regulation with lesspower and heat dissipation.national.com/ledPrevious Page | Contents | Zoom in | Zoom out | Front Cover | Search Issue | Subscribe | Next PageABE FMaGS