The product is a 18-channel LED driver, supporting 18 20mA LED current sources, and each current source can be independently controlled by I2C interface for brightness, on/off, blinking and gradation.
The LTC3220/LTC3220-1 are highly integrated multi‑display LED drivers that provide up to eighteen universal current sources with 64‑step linear brightness control. They use a low‑noise charge pump to boost voltage and achieve up to 91 % efficiency.
The device operates from 2.9 V to 5.5 V input, supports two I²C addresses, and includes built‑in soft‑start, short‑circuit and thermal protection. It is supplied in a 28‑lead 4 mm × 4 mm UQFN package.
| Operating Voltage (Vin) | 2.9 V – 5.5 V |
|---|---|
| Full‑Scale LED Current | 18 mA – 22 mA |
| Maximum Total Output Current | 360 mA |
| Package | 28‑Lead UQFN (4 mm × 4 mm) |
The device can deliver up to 360 mA total output current.
It provides eighteen universal LED current sources.
It is shipped in a 28‑lead UQFN package measuring 4 mm × 4 mm.