CAT3636 is a high efficiency quad-mode fractional charge pump that can drive up to six LEDs programmable by a one wire digital interface. It has features such as high efficiency up to 92%, low noise input ripple, short circuit protection, thermal shutdown protection, etc.
The CAT3636 is a 3 mm × 3 mm 16‑lead TQFN LED driver that provides four fractional charge‑pump modes (1×, 1.33×, 1.5×, 2×) with up to 92 % efficiency. It can drive up to six LEDs, each programmable from 0.25 mA to 32 mA via a one‑wire EZDim™ interface, and includes protections such as short‑circuit, thermal shutdown, and zero‑current shutdown.
The device operates from a 2.5 V to 5.5 V supply, offers low‑noise ripple, soft‑start, and current‑limiting features. Typical performance graphs, pin descriptions, timing diagrams, and ordering information are provided for designers integrating the part into LCD backlights, RGB LEDs, handheld devices, and other applications.
| Total output current | 192 mA |
|---|---|
| Package | 3 mm × 3 mm 16‑lead TQFN |
| Thermal shutdown temperature | 150 °C |
It can drive up to six LEDs, each programmable from 0.25 mA to 32 mA.
The part is offered in a 3 mm × 3 mm, 16‑lead TQFN package.
The device includes short‑circuit protection, thermal shutdown, and a zero‑current shutdown mode.