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Small diode ups smart phone display backlighting efficiency

Posted: 16 Aug 2010 ?? ?Print Version ?Bookmark and Share

Keywords:diode? boost switch? smart phone?

Fairchild Semiconductor introduces the FDZ3N513ZT, an N-Channel and Schottky diode combination in a 1mm x 1mm footprint, as an integral element of the boost converter that drives white LEDs in a series string to illuminate smart phone displays (and keys, if a keypad is present).

This solution features low switching losses due to the precise optimization of dynamic characteristics, resulting in high conversion efficiency and longer battery life in cellphone applications.

It incorporates a 30V integrated N-Channel MOSFET and Schottky diode, featuring 45pF typical input capacitance and total gate charge of 1nC to improve efficiency in boost converter designs.

The FDZ3N513ZT is housed in a 1mm x 1mm WL-CSP package and saves 60 percent of board space when compared to devices in 1.6mm x 1.6mm packaging. Samples are available now. The price is $0.75 in 1,000 unit orders.

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