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Product details

Parameters

Channels (#) 24 LED current per channel (mA) 30 Features Internal GS Clock, PWM LED Driver, Thermal Shutdown Operating temperature range (C) -40 to 85 open-in-new Find other RGB LED drivers

Package | Pins | Size

HTSSOP (DAP) 32 68 mm² 6.2 x 11 VQFN (RHB) 32 25 mm² 5.0 x 5.0 open-in-new Find other RGB LED drivers

Features

  • 24 Channels, Constant-Current Sink Output
  • 30-mA Capability (Constant-Current Sink)
  • 12-Bit (4096 Steps) PWM Grayscale Control
  • LED Power-Supply Voltage Up to 30 V
  • VCC = 3.0 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±2% (Typical)
    • Device-to-Device = ±2% (Typical)
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate (Standalone)
  • 15-MHz Data Transfer Rate (Cascaded Devices,
    SCLK Duty = 50%)
  • Shift Out Data Changes With Falling Edge to
    Avoid Data Shift Errors
  • Auto Display Repeat
  • 4-MHz Internal Oscillator
  • Thermal Shutdown (TSD):
    • Automatic Shutdown at OverTemperature Conditions
    • Restart Under Normal Temperature
  • Noise Reduction:
    • 4-Channel Grouped Delay to Prevent Inrush Current
  • Operating Temperature: –40°C to 85°C
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Description

The TLC5947 is a 24-channel, constant-current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor.

The TLC5947 has a thermal shutdown (TSD) function that turns off all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions.

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Technical documentation

= 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 TLC5947 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator datasheet (Rev. B) Jan. 14, 2015
White paper Common LED Functions and LED Driver Design Considerations Sep. 21, 2020
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 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 note Hardware Design Considerations for a Wireless LED based Display Design Jun. 11, 2014

Design & development

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Design tools & simulation

SIMULATION MODEL Download
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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 (...)
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  • 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
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CAD/CAE symbols

Package Pins Download
HTSSOP (DAP) 32 View options
VQFN (RHB) 32 View options

Ordering & quality

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