This document introduces the characteristics and features of TLC5905 LED driver, including drive capability and output counts, constant current output range, constant current accuracy, voltage applied to constant current output terminals, 256 gray scale display, brightness adjustment, error output signal detection, data output timing selectable, OVM (output voltage monitor), WDT (watchdog timer), TSD (thermal shut down) and more
The TLC5905 is a constant‑current LED driver that integrates a shift register, data latch, and brightness‑control circuitry. It supports 256‑step gray‑scale control, selectable output currents of up to 80 mA (16‑bit mode) or 120 mA (8‑bit mode), and includes monitoring features such as output‑voltage monitor, watchdog timer, and thermal shutdown.
The document provides pin assignments, functional block diagrams, terminal descriptions, absolute‑maximum ratings, recommended operating conditions, and packaging details for the 64‑pin HTQFP package. It also contains regulatory and warranty notices from Texas Instruments.
| Maximum output current (16‑bit mode) | 80 mA |
|---|---|
| Maximum output current (8‑bit mode) | 120 mA |
| Constant current output range | 5 mA‑80 mA / 10 mA‑120 mA (selectable) |
| Operating temperature range | -20 °C – 85 °C |
| Package type | 64‑Pin HTQFP |
| Clock frequency (SCLK, single operation) | 15 MHz |
The device can sink up to 80 mA per channel in 16‑bit mode or up to 120 mA per channel in 8‑bit mode.
The TLC5905 operates from –20 °C up to 85 °C in free‑air conditions.
The part is offered in a 64‑pin HTQFP (high‑temperature quad flat package).