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TLC5945

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16-channel LED driver w/dot correction & grayscale PWM control & no delay

Product details

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
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
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4 VQFN (RHB) 32 25 mm² 5 x 5 — (—) See data sheet
  • 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
  • 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.

  • 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
  • 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.

The TLC5945 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 TLC5945 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 TLC5945 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 TLC5945 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
* Data sheet 16 Channel LED Driver w/DOT Correction & Grayscale PWM Control datasheet 20 Mar 2007
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

Design & development

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Simulation model

TLC5945 IBIS Model

SLIM238.ZIP (46 KB) - IBIS Model
Simulation tool

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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 (...)
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HTSSOP (PWP) 28 View options
VQFN (RHB) 32 View options
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