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Lighting management unit features high efficiency converter

Lighting management unit features high efficiency converter

austriamicrosystems announces the AS3676, a highly integrated lighting management unit (LMU) with ambient light sensing (ALS) and dynamic luminance scaling (DLS). The chip integrates 13 current sinks, a high-efficiency step-up dc-dc converter and high-power charge-pump, an analog-to-digital converter (ADC) and a programmable low drop-out regulator (LDO), all incorporated with advanced algorithms for high efficiency display and keypad backlight, funlight, smartlight, and other advanced portable illumination and indication effects.

With advanced technologies, the LMU portfolio enables the smallest PCB (printed circuit board) solutions and the lowest system cost, according to company sources. The integration of the main illumination features facilitates controlling all mobile lighting with a single chip. This simplifies hardware and software development and shortens time to market. The features and flexibility of the AS3676 make it well suited for a number of portable consumer electronic products, including mobile phones, mobile TVs, mobile DVD players, mobile GPS devices, and MP3 players.

With both ALS and DLS supported by the AS3676, power conservation through automatic adjustment of backlighting and other LED functions is simplified. In addition, built-in features such as automatic dimming, pattern generation, and audio sync function enable eye-catching visual effects with minimum load on the baseband processor.

The AS3676 is available in a CS-WLP30, 3 x 2.5 mm package; it operates over a 3.0 to 5.5 V supply range, and temperature range of -30° to 85° C.

For more information, contact austriamicrosystems USA Inc., 5201 Great America Parkway, Suite 320, Santa Clara, CA 95054. Phone: 408-345-1790.

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