Electronic Design
1.5A WLED Driver Supports 5-Mpixel Camera Apps

1.5A WLED Driver Supports 5-Mpixel Camera Apps

The MAX8834, a 1.5A white-LED (WLED) flash driver offers a compact, flexible solution for supporting 5-megapixel cameras, smartphones, and other cellular handsets requiring a flash current of 1.5A. The device integrates an I2C interface, 5V PWM dc/dc step up converter, two high-current regulators, and a low-current regulator for driving an indicator LED. Two switching-frequency options allow the designer to optimize for high efficiency. The 2 MHz option enables up to 95% efficiency at full load while the 4-MHz option offers the smallest total solution size with a board area of 16.5 mm2. Other features include an optional remote temperature sensor interface, I2C-programmable safety and watchdog timers, and automatic open/short LED detection. Available in a 30-bump, 2.5 mm x 2 mm x 0.65 mm WLP with an operating temperature range from -40°C to +85°C, price for the MAX8834 starts at $1.65 each/1,000. MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.

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