TLC6C5716-Q1

• AEC-Q100 Qualified for Automotive Applications
  • Device Temperature Grade 1: –40°C to 125°C, T_A
• 16 Constant-Current-Sink Output Channels
  • 50-mA Maximum Output Current
  • 8-V Maximum Output Voltage
  • Two Output Groups: OUTRn, OUTBn
• Output Current Adjustment
  • 7-Bit Dot Correction (DC) for Each Channel
  • 8-Bit Brightness Control (BC) 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 (LOD), LED-Short Detection (LSD), Output Short-to-GND Detection (OSD)
  • Adjacent-Pin Short (APS) Detection
  • Pre-Thermal Warning (PTW), Thermal Shutdown (TSD)
  • IREF Resistor Open- (IOF) and Short-Detection (ISF) 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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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 TLC6C5716-Q1 device is an automotive 16-channel constant-current RGB LED driver that can do tests on the LEDs. The TLC6C5716-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 1 serial interface.