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The LDS8861 is a high-efficiency 1x/1.33x/1.5x/2x fractional charge pump capable of driving up to six LEDs at up to 32mA each. LED dimming control is programmable with a one-wire interface enabling current level adjustment from 0.25mA to 32mA. LED channel matching is supported within +/-1%, with current accuracy at +/-3%. Input voltages from 2.3v to 5.5v are supported with efficiency up to 92%. Operation at switching frequencies of 1.1MHz (1.5x mode) and 800kHz (1.33x and 2x modes) enables low noise input ripple and utilization of small external ceramic capacitors. Other product features include soft start and current limiting, thermal shutdown and short circuit protection, and a low current shutdown mode of 1uA max. The LDS8861 is offered in a 16-lead thin QFN 3mm x 3mm package with a maximum height of 0.8mm.

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