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TLC5929

Texas Instruments
Part Number TLC5929
Manufacturer Texas Instruments
Description 16-Channel Constant-Current LED Driver
Published Oct 1, 2019
Detailed Description TLC5929 www.ti.com SBVS159B – APRIL 2011 – REVISED JULY 2012 16-Channel, Constant-Current LED Driver with 7-Bit Globa...
Datasheet PDF File TLC5929 PDF File

TLC5929
TLC5929

Overview
TLC5929 www.
ti.
com SBVS159B – APRIL 2011 – REVISED JULY 2012 16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control, PowerSave Mode, and Full Self-Diagnosis for LED Lamp Check for Samples: TLC5929 FEATURES 1 •23 16 Constant-Current Sink Output Channels with On/Off Control • Current Capability: – 40 mA (VCC ≤ 3.
6 V) – 50 mA (VCC > 3.
6 V) • Global Brightness Control: 7-Bit (128 Steps) • Power-Supply Voltage Range: 3.
0 V to 5.
5 V • LED Power-Supply Voltage: Up to 10 V • Constant-Current Accuracy: – Channel-to-Channel = ±1% (typ), ±3% (max) – Device-to-Device = ±2% (typ), ±4% (max) • Data Transfer Rate: 33 MHz • BLANK Pulse Width: 40 ns (min) • LED Open Detection (LOD)/LED Short Detection (LSD) with Invisible Detection Mode (IDM) • Output Leakage Detection (OLD) Detects 3 µA Leak • Pre-Thermal Warning (PTW) • Thermal Shutdown (TSD) • Current Reference Terminal Short Flag (ISF) • Power-Save Mode with 10-µA Consumption • Undervoltage Lockout Sets the Default Data • 2-ns Delayed Switching Between Each Channel Minimizes Inrush Current • Operating Temperature: –40°C to +85°C APPLICATIONS • Variable Message Signs (VMS) • Illumination DESCRIPTION The TLC5929 is a 16-channel constant current sink LED driver.
Each channel can be turned on or off by writing data to an internal register.
The constant current value of all 16 channels is set by a single external resistor with 128 steps for the global brightness control (BC).
The TLC5929 has six error flags: LED open detection (LOD), LED short detection (LSD), output leakage detection (OLD), reference current terminal short detection (ISF), pre-thermal warning (PTW) and thermal error flag (TEF).
In addition, the LOD and LSD functions have invisible detection mode (IDM) that can detect those errors even when the output is off.
The error detection results can be read via a serial interface port.
The TLC5929 also has a power-save mode that sets the total current consumption to 10 µA (typ) when all outputs are ...


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