The FAN5702 LED driver from Fairchild Semiconductor can drive up to six LEDs in parallel, delivering a total current of 180 mA (30 mA per LED). It features a programmable I2C interface for independent brightness control of up to five backlight channels and optional PWM dimming.
The device operates from a 2.7 V‑5.5 V supply, offers up to 92 % efficiency, and is available in two compact packages (WLCSP and UMLP). Detailed electrical specifications, pin layouts, timing diagrams, and register maps are provided for designers. This manual is written in Chinese.
| Total LED current | 180 mA |
|---|---|
| Maximum LED current per LED | 30 mA |
| Input voltage range | 2.7 V – 5.5 V |
| PWM dimming frequency | 100 Hz |
| PWM dimming ratio | ≥ 600:1 |
| Efficiency | up to 92 % |
| Switching frequency | 1.2 MHz |
| I2C standard‑mode clock | 100 kHz |
| I2C fast‑mode clock | 400 kHz |
It operates from 2.7 V to 5.5 V.
Up to six LEDs can be driven in parallel.
Yes, PWM dimming is supported with a 100 Hz frequency and a dimming ratio greater than 600:1.