The A6285 is designed for LED display applications. It includes an On/Off shift register, a Dot Correction shift register, data latches, and 16 MOS constant-current sink drivers. It supports direct interfacing with microprocessor-based systems and has a high serial data input rate. The LED drive current can be set by an external resistor. It supports cascading of multiple devices, individual LED light intensity adjustment, and open LED detection. It also has fault output and delay control features.
The A6285 is a 16‑channel constant‑current LED driver designed for LED display applications. It features a 3.0‑5.5 V logic supply range, up to 90 mA constant‑current sinking outputs per channel, open‑LED detection, dot‑correction with 7‑bit resolution, and active pull‑up enable/disable.
Typical applications include monochrome, multicolor, and full‑color LED displays, signboards, and lighting. The device is supplied in a 5 mm × 5 mm, 32‑pin QFN package with an exposed thermal pad and operates with a maximum clock frequency of 30 MHz. Electrical ratings, thermal characteristics, and layout recommendations are provided for reliable integration.
| Logic Supply Voltage Range | 3.0 V – 5.5 V |
|---|---|
| Maximum Output Current per Channel | 90 mA |
| Package | 5 mm × 5 mm QFN, 32‑pin, exposed thermal pad |
| Package Power Dissipation (continuous, 25 °C) | 3.9 W |
| Maximum Clock Frequency | 30 MHz |
Each channel can sink up to 90 mA of constant current.
The maximum channel current is set by an external resistor (REXT) connected between the REXT pin and PGND; the current equals the resistor value multiplied by 38.4.
The device operates with a logic supply voltage between 3.0 V and 5.5 V.
The A6285 provides 16 constant‑current sink channels.