CAT3644 pdf,datasheet
4-Channel Ultra High Efficiency Quad-Mode®LED Driver
The CAT3644 is a high efficiency Quad-Mode®
fractional charge pump that can drive up to four LEDs
programmable by a one wire digital interface. The
inclusion of a 1.33x fractional charge pump mode
increases device efficiency by up to 10% over tradi–
tional 1.5x charge pumps with no added external
capacitors.
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