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Allegro Microsystems, Inc. Introduces High-Efficiency
Charge Pump White Led Driver for Display Backlight and Flash/Torch
Six Channels, Small Package, High Efficiency for Extended Battery
Life 
Worcester, MA, October 23, 2006 — Allegro announces a new high efficiency charge pump IC that offers a simple, low-cost white LED driver solution for driving four display backlight and two flash/torch/video mode white LEDs. Using a proprietary control scheme (1×, 1.5×, and 2×), Allegro’s A8530 can deliver well-matched LED current while maintaining the highest efficiency and low EMI. The LED current is regulated over the entire range of Li+ battery voltage to provide uniform intensity.
The four WLED backlight channels can be driven with up to 30 mA each, while the two flash torch can be driven with up to 100 mA each. Channels can also be tied together for application flexibility, with a total output current of up to 320 mA continuous.
LED brightness and on/off can be controlled for four display backlight LEDs and two flash/torch LEDs through single-wire serial interface pins.
The A8530 is available in a very thin profile (0.75 mm nominal height) 3.0 mm × 3.0 mm MLP-16 package. For more information on this part, please access Allegro’s A8530 datasheet at www.allegromicro.com/en/Products/Part_Numbers/8530.
About Allegro
Allegro MicroSystems, Inc. is a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits. Allegro's innovative solutions serve high-growth applications within the automotive, communications, computer/office automation, consumer and industrial markets. Allegro is headquartered in Worcester, Massachusetts (USA) with design and applications centers located in North and South America, Asia, and Europe. Further information about Allegro can be found at www.allegromicro.com.
Editorial Contact:
Stephanie Fennelly
Director - Marketing Communications
Tel: (508) 854-5363
sfennelly@allegromicro.com