Description
The CAT3644 is a high efficiency quad-mode fractional charge pump that can drive up to four LEDs programmable by a one wire digital interface.
tional 1.5x charge pumps with no added exte
Features
- High efficiency 1.33x charge pump.
- Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x.
- Drives up to 4 LEDs at 25mA each.
- 1-wire EZDim™ LED current programming.
- Power efficiency up to 92%.
- Low noise input ripple in all modes.
- “Zero” current shutdown mode.
- Soft start and current limiting.
- Short circuit protection.
- Thermal shutdown protection.
- 3mm x 3mm, 16-lead TQFN package.
CAT3644 Datasheet
