Automotive LED Sequential Brake/Turn Light TI Reference Design


Design files


This reference design utilizes a TLC6C5912 shift register operated via two 555 timers integrated in the TLC556 device, showcasing a cost-effective design for rolling LED design. This design can also withstand automotive cold-crank conditions capable of full operation at 5 V with the ability to operate down to 3.3 V.

  • LED patterns remain periodic while still adjustable by the user which allows flexibility in number of LEDs used
  • No MCU or software required which provides cost-effectiveness that helps with production release time
  • Thermal shutdown protection integrated in TLC6C5912-Q1  to avoid overheating and damaging the IC
  • Slow swithcing time: rise time = 207 ns and fall time = 128 ns to significantly reduce EMI
??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU572.PDF (333 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers

TIDC665.ZIP (12 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Automotive LED drivers

TLC6C5912-Q1Automotive power logic 12-bit Shift Register LED driver

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 2
Type Title Date
User guide TIDA-00336 Design Considerations Oct. 03, 2014
Test report TIDA-00336 Test Results Oct. 03, 2014

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​