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TLC5940

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16-channel LED driver w/EEprom dot correction & grayscale PWM control

Data sheet
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16-channel LED driver w/EEprom dot correction & grayscale PWM control

TLC5940

ACTIVE
Data sheet Order now

Product details

Parameters

Channels (#) 16 LED current per channel (mA) 120 Operating temperature range (C) -40 to 85 open-in-new Find other RGB LED drivers

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 4.4 x 9.7 HTSSOP (PWP) 28 43 mm² 4.40 x 9.70 VQFN (RHB) 32 25 mm² 5.0 x 5.0 open-in-new Find other RGB LED drivers

Features

  • 16 Channels
  • 12 bit (4096 Steps) Grayscale PWM Control
  • Dot Correction
    • 6 bit (64 Steps)
    • Storable in Integrated EEPROM
  • Drive Capability (Constant-Current Sink)
    • 0 mA to 60 mA (VCC < 3.6 V)
    • 0 mA to 120 mA (VCC > 3.6 V)
  • LED Power Supply Voltage up to 17 V
  • VCC = 3 V to 5.5 V
  • Serial Data Interface
  • Controlled In-Rush Current
  • 30 MHz Data Transfer Rate
  • CMOS Level I/O
  • Error Information
    • LOD: LED Open Detection
    • TEF: Thermal Error Flag
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Description

The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.

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Technical documentation

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Type Title Date
* Datasheet TLC5940 16-Channel LED Driver With DOT Correction and Grayscale PWM Control datasheet (Rev. D) Dec. 03, 2015
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Application note Grayscale and Dot-Corrected LED Display Using TLC5941 and MSP430F427 (Rev. B) Sep. 27, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 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
Application note Hardware Design Considerations for a Wireless LED based Display Design Jun. 11, 2014
Application note Using the TLC5940 with Higher LED Supply Voltages and Series LEDs Aug. 20, 2007
Application note LED Driver--Paralleled Outputs Provide High Current Outputs Sep. 25, 2006
Application note TLC5940 One Wire Control--Eliminating Microprocessor Control for Integr LED Driv Sep. 25, 2006
Application note LED Display System Module Using Cascading TLC5940 Devices Jul. 06, 2006
Application note TLC5940 PWM dimming provides superior color quality in LED video displays Apr. 18, 2006
Application note TLC5940 dot correction compensates for variations in LED brightness Oct. 10, 2005
User guide TLC5940 EVM Sep. 28, 2005

Design & development

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

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
LED Frame Designer Software
LED-FRAME-DESIGNER — LED Frame Designer Software allows the user to individually control the Dot Correction and PWM dimming levels for each LED on the TLC59xx EVM. The software also allows the user to program and play multiple LED “frames” to create different lighting patterns on the EVM.
SOFTWARE PROGRAMMING TOOL Download
SLVC106.PDF (115 KB)

Design tools & simulation

SIMULATION MODEL Download
SLIM237.ZIP (47 KB) - IBIS 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
  • (...)
View details

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options
VQFN (RHB) 32 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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