The TLC5922 is a 16-channel constant-current sink driver from TI. Its features include controlled in-rush current, 16 channels, the ability to drive monochrome, multicolor, full-color LED displays, constant current accuracy of ±1%, a serial data interface, fast switching output, CMOS level input/output.
The TLC5922 LED driver provides 16 independent constant‑current sink channels, each adjustable in 128 steps of dot‑correction. Current per channel is set by an external resistor and can reach up to 80 mA. The device is programmed via a serial data interface compatible with SPI, supporting a 30 MHz data transfer rate and fast 10 ns switching.
The IC is supplied in a 32‑pin HTSSOP PowerPAD package, operates from 3.0 V to 5.5 V, and is rated for –20 °C to 85 °C. It includes features such as dot‑correction, individual on/off control, and a BLANK signal to disable all outputs simultaneously. Detailed electrical, AC, and switching characteristics are provided for design reference.
| Number of channels | 16 |
|---|---|
| Drive capability (max current per channel) | 0 to 80 mA |
| Current accuracy | ±1 % (typical) |
| Serial interface | SPI compatible |
| Data transfer rate | 30 MHz |
| Supply voltage (VCC) | 3.0 V to 5.5 V |
| Operating temperature range | -20 °C to 85 °C |
| Package | 32‑pin HTSSOP (PowerPAD) |
| Dot‑correction resolution | 7‑bit (128 steps) |
The TLC5922 provides 16 independent constant‑current sink channels.
Each channel can source up to 80 mA, set by an external resistor.
The device uses a serial data interface that is compatible with SPI.
The TLC5922 supports a data transfer rate of 30 MHz.