CAT3626 Overview
The CAT3626 is a high efficiency 1x/1.5x fractional charge pump with programmable dimming current in six LED channels. To ensure uniform brightness in LCD backlight applications, each LED channel delivers an accurate regulated current. Low noise and input ripple is achieved by operating at a constant switching frequency of 1 MHz which allows the use of small external ceramic capacitors.
CAT3626 Key Features
- Drives 6 LED Channels
- Independent Current on 3 Pairs of LEDs
- I2C Serial Interface Programming
- Adjustable Current to 32 mA in 0.5 mA Step
- Power Efficiency up to 91%
- Fractional Pump 1x/1.5x
- Low Noise Input Ripple
- Fixed High Frequency Operation 1 MHz
- Soft Start and Current Limiting
