CAT3649
CAT3649 is 6-Channel LED Driver manufactured by onsemi.
6-Channel LED Driver with
32 Dimming Levels & PWM
Description
The CAT3649 is a high efficiency 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 2.4 V to 5.5 V.
The LED current can be adjusted in different ways. The full- scale LED current is set to 25 mA once the device is enabled. Analog dimming...
