TLC5923 is a 16 channel constant current sink driver from TI. It supports monochrome, multicolor, full color LED display, monochrome, multicolor LED signboard, display backlighting, multicolor LED lighting applications and so on. The driver supports 0 to 80mA constant current, the current accuracy is ±1%, and it has serial data interface and fast switching output.
The TLC5923 LED driver provides sixteen constant‑current sink channels that can be individually turned on/off and fine‑tuned with 7‑bit dot‑correction. An external resistor sets the maximum current for all channels, while a serial data interface programs both dot‑correction and on/off states.
Key features include a 0‑80 mA drive capability, ±1 % current accuracy, 10 ns typical switching speed, 30 MHz data transfer rate, operation from 3.0 V to 5.5 V supply, and built‑in error detection for LED open (LOD) and thermal overload (TEF). The device is offered in 32‑pin HTSSOP (PowerPAD) and QFN packages.
| Number of channels | 16 |
|---|---|
| Drive capability | 0 to 80 mA (constant‑current sink) |
| Current accuracy | +1 % (typical) |
| Data transfer rate | 30 MHz |
| Supply voltage (VCC) | 3.0 V to 5.5 V |
| Operating temperature | -40 °C to 85 °C |
| LED supply voltage | up to 17 V |
| Dot correction resolution | 7 bit (128 steps) |
| Error detection | LED Open Detection (LOD) and Thermal Error Flag (TEF) |
Each channel can sink from 0 to 80 mA of constant current.
Dot‑correction uses a 7‑bit (128‑step) value for each channel, programmed via the serial interface.
The device supports a data transfer rate of up to 30 MHz.