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CAT3647

Part Number	CAT3647
Manufacturer	ON Semiconductor
Description	3-Channel Ultra High Efficiency LED Driver
Published	Aug 9, 2010
Detailed Description	CAT3647 3-Channel Ultra High Efficiency LED Driver with 32 Dimming Levels Description The CAT3647 is a high efficiencye...
Datasheet	CAT3647 PDF File

Overview

CAT3647 3-Channel Ultra High Efficiency LED Driver with 32 Dimming Levels Description The CAT3647 is a high efficiencye fractional charge pump that can drive up to three 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 traditional 1.
5x charge pumps with no added external capacitors.
Low noise input ripple is achieved by operating at a constant switching frequency which allows the use of small external ceramic capacitors.
The multi−fractional charge pump supports a wide range of input voltages from 2.
4 V to 5.
5 V.
The EN/DIM logic input functions as a chip enable and a digital dimming interfa...

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