Description
The multi-level brightness control white LED driver not only ensures efficient boost by automatically changing the boost rate but also works as a constant current driver in 64 steps, so that the driving current can be adjusted finely. This IC is best suited to turn on white LEDs that require high-accuracy LED brightness control.

FEATUREs
1) Built-in parallel LED driver for 4 to 6 lamps.
2) 64-step LED current adjust function.
3) Inter-LED relative current accuracy: 3% or less
4) Lighting/dimming control via a single-line digital control interface.
5) Automatic transition charge pump type DC/DC converter (×1,×1.5 and ×2).
6) High efficiency achieved (90% or more at maximum).
7) Various protection functions such as output voltage protection, over current limiter and thermal shutdown circuit are mounted.
8) Small QFN package.

APPLICATIONs
   This driver is applicable for various fields such as mobile phones, portable game machines and white goods.