Automotive 12-bit constant-current sink LED driver

TLC6C5712-Q1

ACTIVE

Product details

Number of channels (#) 12 Topology Current Sink Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0 Vout (Max) (V) 7 Iout (Max) (A) 0.9 Iq (Typ) (mA) 3.5 Features Adjacent-Pin Short Detection, LED Open Detection, LED Short to Ground Detection, LED Weak Supply Diagnostics, SPI Register Lock for Content Protection, Thermal Prewarning and Shutdown
Number of channels (#) 12 Topology Current Sink Rating Automotive Operating temperature range (C) -40 to 125 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Vout (Min) (V) 0 Vout (Max) (V) 7 Iout (Max) (A) 0.9 Iq (Typ) (mA) 3.5 Features Adjacent-Pin Short Detection, LED Open Detection, LED Short to Ground Detection, LED Weak Supply Diagnostics, SPI Register Lock for Content Protection, Thermal Prewarning and Shutdown
HTSSOP (PWP) 28 43 mm² 9.7 x 4.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H3A
    • Device CDM ESD Classification Level C4B
  • 12 Power DMOS-Transistor Output Channels
    • Maximum Constant Current up to 75 mA,
      Programmable through External Resistor
    • Maximum Output Voltage up to 7 V
    • Maximum Dropout Voltage:
      • 0.75 V at 50 mA per Channel
      • 1.2 V at 75 mA per Channel
  • Excellent Output Constant-Current Accuracy:
    • Channel-Channel Difference: < ±3% (Max.)
    • Device-Device Difference: < ±3% (Max.)
    • 8-Bit, 256-Step Linear Dot Correction for Each
      Channel
  • Flexible External PWM Dimming Support
    • 6 PWM Inputs With Frequency Supervision
    • Programmable Channel Mapping Capability
      through SPI
  • Protection and Diagnostics
    • Adjacent-Pin Short Detection
    • Open-Load, Short-to-GND, Shorted-LED,
      Detection for Both Activated and Deactivated
      State
    • Thermal Prewarning and Shutdown
    • Open-Drain Error Retorting
    • LED Weak Supply Diagnostics
    • Reference Resistor Open or Short Detection
      and Protection
    • SPI Register Lock for Content Protection
    • Force Error for SPI Integrity Diagnostics
  • Small and Thermally Effective 28-Pin HTSSOP
    PowerPAD™ Package
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H3A
    • Device CDM ESD Classification Level C4B
  • 12 Power DMOS-Transistor Output Channels
    • Maximum Constant Current up to 75 mA,
      Programmable through External Resistor
    • Maximum Output Voltage up to 7 V
    • Maximum Dropout Voltage:
      • 0.75 V at 50 mA per Channel
      • 1.2 V at 75 mA per Channel
  • Excellent Output Constant-Current Accuracy:
    • Channel-Channel Difference: < ±3% (Max.)
    • Device-Device Difference: < ±3% (Max.)
    • 8-Bit, 256-Step Linear Dot Correction for Each
      Channel
  • Flexible External PWM Dimming Support
    • 6 PWM Inputs With Frequency Supervision
    • Programmable Channel Mapping Capability
      through SPI
  • Protection and Diagnostics
    • Adjacent-Pin Short Detection
    • Open-Load, Short-to-GND, Shorted-LED,
      Detection for Both Activated and Deactivated
      State
    • Thermal Prewarning and Shutdown
    • Open-Drain Error Retorting
    • LED Weak Supply Diagnostics
    • Reference Resistor Open or Short Detection
      and Protection
    • SPI Register Lock for Content Protection
    • Force Error for SPI Integrity Diagnostics
  • Small and Thermally Effective 28-Pin HTSSOP
    PowerPAD™ Package

In automotive cluster and other safety-critical LED driver applications, the performance demand for multi-channel LED is increasing to achieve consistency of LED brightness and color temperature. System-level safety considerations require detection capability for various fault scenarios and thus increase system complexity.

The TLC6C5712-Q1 device is a 12-channel constant-current-sink LED driver. The precision output current with 8-bit dot correction makes the TLC6C5712-Q1 device a perfect solution to correct LED brightness and color temperature variation. Advanced protection and diagnostics for each component improve system-level robustness and ease safety-oriented design. Six PWM inputs with programmable mapping support different LED color-dimming configurations and provide a high dimming ratio. A 16-bit serial-peripheral interface (SPI with diagnostics supports multiple devices in a daisy chain and eases the system-level design.

In automotive cluster and other safety-critical LED driver applications, the performance demand for multi-channel LED is increasing to achieve consistency of LED brightness and color temperature. System-level safety considerations require detection capability for various fault scenarios and thus increase system complexity.

The TLC6C5712-Q1 device is a 12-channel constant-current-sink LED driver. The precision output current with 8-bit dot correction makes the TLC6C5712-Q1 device a perfect solution to correct LED brightness and color temperature variation. Advanced protection and diagnostics for each component improve system-level robustness and ease safety-oriented design. Six PWM inputs with programmable mapping support different LED color-dimming configurations and provide a high dimming ratio. A 16-bit serial-peripheral interface (SPI with diagnostics supports multiple devices in a daisy chain and eases the system-level design.

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Technical documentation

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Type Title Date
* Data sheet TLC6C5712-Q1 12-Channel, Full-Diagnostic, Constant-Current-Sink LED Driver With 8-Bit Dot Correction datasheet (Rev. A) 31 Aug 2015
White paper Fundamentals to automotive LED driver circuits 09 May 2019
Technical article TI at the Auto Lamp Exhibition 2018 in Shanghai 30 Mar 2018
Technical article Here's how body electronics and lighting technology are changing the driving experience 26 Sep 2016
Technical article LED brightness adjustment: high-frequency PWM dimming 26 Aug 2016
Application note TLC6C5712-Q1 Applications Reference Guide 11 Aug 2016
User guide TLC6C5712-Q1 Evaluation Module (Rev. A) 08 Jul 2015
Technical article Take better selfies with innovative LED flashes 18 Nov 2014

Design & development

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Evaluation board

TLC6C5712EVM — TLC6C5712 12 Channels Linear Constant Current LED Driver Evaluation Module

TLC6C5712EVM is designed for evaluating TLC6C5712, which is a 12-channels linear constant current led driver IC, it can support current up to 75mA per channel. It also has full protection & diagnostics functions,  such as LED open protection, LED short , Adjacent Pin short fault detection and etc.

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GUI for evaluation module (EVM)

TLC6C5712EVM GUI

SLVC617.ZIP (176966 KB)
Simulation model

TLC6C5712-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMB01B.ZIP (95 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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

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