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Product details

Parameters

Features Dot Correction, Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Power Good Analog dimming steps 64 Data transfer rate (Typ) (MHz) 30 Ch to ch accuracy (Typ) (+/- %) 1 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Signage LED display drivers

Package | Pins | Size

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

Features

  • 16 Channels
  • 12-Bit (4096 Steps) Grayscale PWM Control
  • Dot Correction
    • 6 Bit (64 Steps)
  • Drive Capability (Constant-Current Sink)
    • 0 mA to 80 mA
  • LED Power Supply Voltage up to 17 V
  • VCC = 3.0 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
  • APPLICATIONS
    • Monocolor, Multicolor, Full-Color LED Displays
    • LED Signboards
    • Display Back-Lighting

PowerPAD is a trademark of Texas Instruments.

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Description

The TLC5941 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. Both grayscale control and dot correction are accessible via a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5941 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 16 Channel LED Driver w/DOT Correction and Grayscale PWM Control datasheet (Rev. D) Jan. 03, 2008
Application notes Grayscale and Dot-Corrected LED Display Using TLC5941 and MSP430F427 (Rev. B) Sep. 27, 2018
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014
Application notes Using the TLC5940 with Higher LED Supply Voltages and Series LEDs Aug. 20, 2007
Application notes LED Driver--Paralleled Outputs Provide High Current Outputs Sep. 25, 2006
User guides TLC5941EVM-105 EVM Oct. 16, 2005

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SLIM018.ZIP (65 KB) - IBIS Model

CAD/CAE symbols

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

Ordering & quality

Support & training

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Videos

Dimming Methods: PWM Dimming

In this short on-demand training video, learn the basics of PWM dimming based on three different dimming methodologies, main FET, Series FET and Shunt FET dimmi

Posted: 03-Jan-2018
Duration: 06:43

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