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LED Driver enables lighting effects in portable applications

Wed, 11/25/2009 - 7:11am

ec912bod234-modThe AS3665 LED driver (from austriamicrosystems) enables lighting effects in mobile phones and a variety of other consumer applications. The AS3665 offers nine LED channels with up to 25 mA per channel. A dedicated 12bit PWM for each of the nine channels delivers color effects allowing linear, logarithmic and ratiometric fading effects. The PWM generators have three sequencers and a 1.5kbit memory. This allows storing and processing complex light patterns without the need for external processors or interaction. Each channel operates with less than 50 mV dropout voltage at 10 mA, powered by a 150 mA charge pump with automatic switching between 1:1, 1:1.5 and 1:2 mode.

austriamicrosystems
919-676-5292, www.austriamicrosystems.com

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