Automotive 24 channel Full diagnostics constant current RGB LED driver



Product details


Topology Current Sink Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0 Vout (Max) (V) 7 Iout (Max) (A) 1.2 Operating temperature range (C) -40 to 125 Features Adjacent-Pin Short Detection, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, LED Shorted Detection, LED Weak Supply Diagnostics, Reference Resistor Open or Short Detection, SPI Register Lock for Content Protection, Thermal Prewarning and Shutdown open-in-new Find other Automotive LED drivers

Package | Pins | Size

HTSSOP (DAP) 38 101 mm² 12.5 x 8.1 open-in-new Find other Automotive LED drivers


  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to 125°C, TA
  • 24 Constant-Current-Sink Output Channels
    • 50-mA Maximum Output Current
    • 8-V Maximum Output Voltage
    • 3 Output Groups: OUTRn, OUTGn, OUTBn
  • Output Current Adjustment
    • 7-Bit Dot Correction for Each Channel
    • 8-Bit Intensity Control for Each Group
  • Integrated PWM Grayscale Generator
    • PWM Dimming for Each Individual Channel
    • Adjustable Global Grayscale Mode: 12-Bit, 10-Bit, 8-Bit
  • Protection and Diagnostics
    • LED-Open Detection, LED-Short Detection, Output Short-to-GND Detection
    • Adjacent-Pin Short Detection
    • Pre-Thermal Warning, Thermal Shutdown
    • IREF Resistor Open- and Short-Detection and -Protection
    • Negate Bit Toggle for GCLK Error Detect and LOD_LSD Register Error Check
    • LOD_LSD Circuit Self-Test
  • Programmable Output Slew Rate
  • Output Channel Group Delay
  • Serial Data Interface

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open-in-new Find other Automotive LED drivers


There are automotive applications for indicators and for LCD local-dimming backlighting. For these applications, more persons think multi-channel constant-current LED drivers are necessary. The requirement is to get the same intensity and color temperature of LEDs. For system-level safety, it is necessary that the LED drivers can sense faults.

The TLC6C5724-Q1 device is an automotive 24-channel constant-current RGB LED driver that can do tests on the LEDs. The TLC6C5724-Q1 device supplies a maximum of 50‑mA output current set by an external resistor. The device has a 7-bit dot correction with two ranges for each output. The device also has an 8-bit intensity control for the outputs of each color group. A 12-,10-, or 8-bit grayscale control adjusts the intensity of each output. The device has circuits that sense faults in the system, including LED faults, adjacent-pin short faults, reference-resistor faults, and more. A slew rate control has 2 positions for adjustment to get the largest decrease in system noise. There is an interval between the changes of output level from one LED group to a different one. This interval helps to decrease the starting electrical current. The SDI and SDO pins let more than one device be connected in series for control through one serial interface.

open-in-new Find other Automotive LED drivers
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Technical documentation

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Type Title Date
* Datasheet TLC6C5724-Q1 Automotive 24-Channel, Full Diagnostics, Constant-Current RGB LED Driver datasheet (Rev. A) Aug. 14, 2018
Functional safety information TLC6C5724-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution Apr. 27, 2020
Technical article How semiconductor technologies are changing automotive lighting roadmaps Oct. 24, 2019
User guide TLC6C5724-Q1 EVM User's Guide Dec. 04, 2017
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article Take better selfies with innovative LED flashes Nov. 18, 2014

Design & development

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SLAC776.ZIP (83160 KB)

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Reference designs

Automotive pixelated dome light reference design for interior lighting
TIDA-020012 — This reference design details a solution to drive and control 30 LEDs individually for automotive interior dome light applications. The high pixel count can be used to create different light zones or welcome light animations. The design also implements LED multiplexing functionality to control up to (...)
document-generic Schematic document-generic User guide
Automotive 144-Zone Local Dimming Backlight Reference Design
TIDA-020001 — This local dimming backlight reference design conserves power, extends the life of liquid-crystal displays (LCDs), and enhances automotive display quality through high dynamic range (HDR) or localized dimming technology. Seven multi-channel constant-current LED drivers allow for 144-zone localized (...)
document-generic Schematic document-generic User guide

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