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TLC5940

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

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Data sheet

TLC5940

ACTIVE
Data sheet Order now

Product details

Number of channels 16 LED current per channel (mA) 120 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 16 LED current per channel (mA) 120 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
HTSSOP (PWP) 28 62.08 mm² (9.7 mm × 6.4 mm) VQFN (RHB) 32 25 mm² (5 mm × 5 mm)
  • 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
  • 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

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.

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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Top documentation Type Title Format options Date
* Data sheet TLC5940 16-Channel LED Driver With DOT Correction and Grayscale PWM Control datasheet (Rev. D) PDF | HTML Dec 3, 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) PDF | HTML Sep 27, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun 25, 2018
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 6, 2006
Analog design Journal TLC5940 PWM dimming provides superior color quality in LED video displays Apr 18, 2006
User guide TLC5940 Programming Flow Chart Jan 26, 2006
Analog design Journal TLC5940 dot correction compensates for variations in LED brightness Oct 10, 2005

Design & development

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

Software development kit (SDK)

LED-FRAME-DESIGNER — 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.

Supported products & hardware
Simulation model

TLC5940 IBIS Model

SLIM237.ZIP (47 KB) - IBIS model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 28 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian
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