Key facts
- Brand
- Catalyst
- Model
- CAT3643
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
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Catalyst CAT3643 3-Channel Ultra High Efficiency Quad-Mode LED Driver Datasheet
The CAT3643 is a high‑efficiency Quad‑Mode LED driver that can drive up to three LEDs at 32 mA each. It features a 1‑wire EZDim digital interface for LED current programming, multiple charge‑pump modes (1×, 1.33×, 1.5×, 2×), soft‑start, short‑circuit and thermal‑shutdown protection, and low‑noise input ripple.
The device is offered in three compact packages (12‑pad XQFN 2.5 × 2.5 mm, 12‑pad TDFN 3 × 3 mm, 16‑pad TQFN 3 × 3 mm) and includes detailed ordering information, pin configuration, absolute maximum ratings, recommended operating conditions, and typical performance graphs.
Catalyst CAT3643 specifications
| Power efficiency | up to 92 % |
|---|---|
| Number of LEDs driven | up to 3 LEDs at 32 mA each |
| Quiescent current (1× mode) | 1.0 mA |
| Thermal shutdown temperature | 150 °C |
| Package options | 12‑pad XQFN 2.5 × 2.5 mm, 12‑pad TDFN 3 × 3 mm, 16‑pad TQFN 3 × 3 mm |
Source: Catalyst CAT3643 3-Channel Ultra High Efficiency Quad-Mode LED Driver Datasheet
All Catalyst CAT3643 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum efficiency of the CAT3643?
The device can achieve up to 92 % power efficiency.
From: Catalyst CAT3643 3-Channel Ultra High Efficiency Quad-Mode LED Driver Datasheet
How many LEDs can the driver control and at what current?
It can drive up to three LEDs, each at a maximum of 32 mA.
From: Catalyst CAT3643 3-Channel Ultra High Efficiency Quad-Mode LED Driver Datasheet
What is the input voltage range for the CAT3643?
The device operates with an input voltage from 2.5 V to 5.5 V.
From: CATALYST SEMICONDUCTOR 3-Channel Ultra High Efficiency Quad-Mode LED Driver Manual
How many LEDs can the CAT3643 drive and at what current?
It can drive up to three LEDs, each at up to 32 mA.
From: CATALYST SEMICONDUCTOR 3-Channel Ultra High Efficiency Quad-Mode LED Driver Manual