Farnell element14 – High-efficiency Quad-Mode fractional charge pump can drive up to six LEDs (ON Semiconductor CAT3649)

Now available from Farnell, the ON Semiconductor CAT3649 is a high-efficiency Quad-Mode fractional charge pump that can drive up to six LEDs.

The inclusion of a 1.33x fractional charge pump mode increases the 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 2.4V to 5.5V.