This document describes the features, applications, and functions of RHB DAP www.ti.com. It is a 16-channel constant-current sink LED driver suitable for monocolor, multicolor, and full-color LED displays, LED signboards, and LED backlighting applications. It features high drive capability, high constant current accuracy, and fast switching output.
The TLC5923 is a 16‑channel constant‑current sink driver designed for LED display and lighting applications. Each channel can be turned on/off and individually adjusted with 7‑bit dot‑correction (128 steps) via a serial data interface. The device also includes LED open detection (LOD) and a thermal error flag (TEF) for fault monitoring.
The datasheet provides detailed electrical characteristics, recommended operating conditions, package options (32‑pin HTSSOP with PowerPAD™ and 32‑pin QFN), and mechanical dimensions. It also describes the serial interface timing, pin functions, and switching characteristics needed for system integration.
| Number of channels | 16 |
|---|---|
| Drive capability | 0 to 80 mA (Constant‑Current Sink) |
| Constant current accuracy | +1 % (typical) |
| Data transfer rate | 30 MHz |
| Supply voltage (Voc) | 3.0 V to 5.5 V |
| Operating temperature range | -40 °C to 85 °C |
| LED supply voltage | up to 17 V |
| Dot‑correction resolution | 7 bit (128 steps) |
| Package options | 32‑pin HTSSOP (PowerPAD) and 32‑pin QFN |
| Maximum power dissipation (25 °C) | 3.9 W |
The TLC5923 provides 16 independent output channels.
Each channel can sink up to 80 mA of current.
Dot‑correction is 7‑bit, giving 128 adjustable steps per channel.
The device operates from –40 °C up to 85 °C.