High-brightness LED driver

  • 13-Oct-2009 09:19 EDT

National Semiconductor features an LED driver with temperature management control and the addition of an online design environment to support it. Part of the company’s PowerWise product family, the LM3424 drives high-brightness LEDs in a variety of automotive applications. Supported in National’s WEBENCH LED Designer, its temperature management control—thermal foldback—enables lighting designers to quickly and easily design a reliable thermal system using the LM3424. Thermal foldback combats the high temperatures that LEDs can reach as a result of environmental conditions. When LED temperatures rise above an usafe threshold, the lifetime and efficacy of the LED decreases. With the LM3424, lighting designers can program temperature and slope breakpoints within which the LEDs operate safely. When an over-temperature condition occurs, the LM3424’s thermal foldback circuitry reduces the regulated current through the LEDs. The LM3424 operates over a wide input range of 4.5 to 75 V.

HTML for Linking to Page
Page URL
Rate It
0.00 Avg. Rating

Read More Articles On

Model ASUH miniature hybrid high-integrity pressure transducer from KA Sensors is designed for use in rugged environments from -65 to +300ºF (-54 to +149ºC) and vibration levels of more than 20 g.
Time of flight (ToF) cameras are ready to let drivers control some of the many options of today’s infotainment systems with a mere wave of their hand. ToF-based systems can also monitor drivers to see if they’re drowsy or not watching roadways.
While OEMs wait for NHTSA's V2X mandate they are discussing whether broad usage can be achieved without regulations.
Lengthy automotive development and production cycles have long prevented automakers and startups from working together. While that’s changed a bit, many young companies still find it difficult to work with OEMs.

Related Items

Technical Paper / Journal Article