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SEPIC backlight LED driver

Posted: 25 Aug 2009 ?? ?Print Version ?Bookmark and Share

Keywords:LED driver MAX16809? SEPIC backlight linear? white LEDs?

This is a reference design for a SEPIC/linear LED-display backlight driver for eight parallel strings of 8 white LEDs (WLEDs) at 70mA/string. The dimming ratio is 4,000:1. The input voltage is 16V to 36V with 50V transients. The design combines a SEPIC switching power supply with adaptive feedback and linear current sinks for high dimming ratios. The MAX16809 16-channel LED driver is featured.

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