LED drivers enable design flexibility

The FAN5701 and FAN5702 are 1x to 1.5x charge pump-based 180-mA six-channel LED drivers that backlight TFT LCD displays in mobile electronics. They are housed in 16-bump WL-CSP and 16-lead UMLP packages and deliver 92% peak efficiency, while extending battery life. The FAN5702 features an I2 C interface, an enable pin, LED output support for 64 logarithmic-dimming steps, and design flexibility — enabling it to be used in different lighting applications beyond backlight LCD displays such as RGB indicator/fun lights.

The FAN5702 also offers PWM signal input to support dynamic backlight control (DBC). The DBC feature with an ambient light sensor provides both dynamic backlight and ambient light control, saving up to 50% in power consumption. The FAN5701 is a cost-effective LED driver that uses two PWM inputs to control the brightness of a grouping of four and two LED outputs. (Ea/1,000: FAN5701, $0.72; FAN5702, $0.95 — 12 weeks ARO.)

Fairchild Semiconductor , South Portland , ME
Sales 207-775-8100
http://www.fairchildsemi.com