Top

Product details

Parameters

Features Fault Detection, LED Open Detection, PWM LED Driver, Pre-Charge FET, SRAM, Thermal Shutdown Analog dimming steps 128 Data transfer rate (Typ) (MHz) 33 Ch to ch accuracy (Typ) (+/- %) 1.5 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other LED display drivers

Package | Pins | Size

SSOP (DBQ) 24 52 mm² 8.65 x 6 VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other LED display drivers

Features

  • Power Supply Voltage Ranges
    • VCC Voltage Range: 3 V to 5.5 V
    • VLED Voltage Range: Up to VCC + 0.3 V
  • 16 Constant-Current-Sink Channels
    • 0.3 mA to 25 mA (3 V ≤ VCC ≤ 5.5 V)
    • Channel Current Deviation: ±1% (typical)
    • Device Current Deviation: ±1% (typical)
    • Low Knee Voltage: 0.3 V (typical) at 10 mA
  • 7-Bit (128 Steps) Global Brightness Control (BC)
  • 16-Bit (65,536 Steps) Enhanced Spectrum PWM Grayscale Control
  • Built-In Memory Supports 32 Multiplexing for TLC6946 and 48 Multiplexing for TLC6948
  • LED Display Performance Enhancement
    • Low-Grayscale Uniformity Improvement
    • Low-Grayscale Coupling Issue Elimination
    • Ghosting Removal and Caterpillar Elimination
  • High-Speed Serial-Data Interface
    • Data-Shift Clock: 33 MHz (maximum)
    • Grayscale Control Clock: 33 MHz (maximum)
    • Supports Dual-Edge Grayscale Control
  • Diagnostics and Protection
    • LED-Open Detection (LOD)
    • IREF Resistor Short Protection (ISP)
    • Thermal Shutdown (TSD)
  • Smart Power-Save Mode

All trademarks are the property of their respective owners.

open-in-new Find other LED display drivers

Description

In high-density, fine-pitch LED panel applications, the performance demand for multi-channel LED drivers is increasing to achieve high multiplexing, high PWM resolution, and high refresh rates. To meet strict display quality requirements, the LED drivers must have the ability to solve various issues in different LED-matrix application scenarios.

The TLC694x device is a 16-channel, constant-current-sink LED driver. Each channel has an individually adjustable 65,536 steps of PWM grayscale control. The maximum constant-current value of all 16 channels is set by a single external resistor with 128 steps of global brightness control from 0.3 mA to 25 mA.

The TLC694x device integrates enhanced circuits to solve the various display issues in fine-pitch LED display applications: the low-grayscale uniformity issue, coupling issue, ghosting issue, and caterpillar issue.

The TLC694x device features an LED-open detection function, and the error detection results can be read via a serial data interface port. Thermal shutdown and IREF resistor short protection ensure a higher system reliability. The TLC694x device also has an smart power-save mode that sets the total current consumption to 1 mA (typical) when all outputs are off.

open-in-new Find other LED display drivers
Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 8
Type Title Date
* Datasheet TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A) Jan. 07, 2019
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
User guide Using the TLC694x VQFN Evaluation Module Feb. 15, 2019
User guide TLC6946 Evaluation Module User's Guide May 24, 2018
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article Take better selfies with innovative LED flashes Nov. 18, 2014
Technical article Solving the automotive EMI issues in new cars with all the screens Sep. 11, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description
The TLC6946 evaluation module (BOOSTXL-TLC6946EVM) is a reference for engineering demonstration and evaluation of the TLC6946 16-channel 32-multiplexing 16-bit ES-PWM constant-current LED driver. The BOOSTXL-TLC6946EVM uses three TLC6946 devices to drive 16 RGB LEDs, each device controlling one (...)
Features
  • Built-In 16-Kbit Memory Supports 32-Multiplexing
  • Enhanced Circuit for LED Display Performance
  • Integrated High Speed Serial Data Interface
  • Diagnostics and Protection
  • Intelligent Power-Save Mode
EVALUATION BOARD Download
document-generic User guide
149
Description
The TLC694x evaluation module (BOOSTXL-TLC6948EVM) is a reference for engineering demonstration and evaluation of the TLC694x 16-channel 32-,  48-multiplexing 16-bit ES-PWM constant-current LED driver with QFN package. The BOOSTXL-TLC6948EVM uses three TLC694x VQFN package devices to drive 16 (...)
Features
  • Built-In 16-Kbit Memory Supports 32-Multiplexing
  • Enhanced Circuit for LED Display Performance Improvement
  • Integrated High Speed Serial Data Interface
  • Diagnostics and Protection
  • Intelligent Power-Save Mode

Design tools & simulation

SIMULATION MODEL Download
SLVMCX9B.ZIP (146 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
SSOP (DBQ) 24 View options
VQFN (RGE) 24 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos