Update: 29 September, 2023
CAT3644 is a high efficiency Quad-ModeTM 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. 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 2.5V to 5.5V. The EN/DIM logic input functions as a chip enable and a digital dimming interface for
File format: PDF
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MD5 Checksum: 6A12E9B2F5D918B8DD7FECF7599C585C
Publication date: 04 May, 2012
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PDF Link: CATALYST SEMICONDUCTOR CAT3644 Manual(1) PDF