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Texas Instruments TLC6C5748-Q1 48-Channel PWM LED Driver

Texas Instruments TLC6C5748-Q1 48-Channel PWM LED Driver is a 48-channel, 16-bit constant-current sink driver. Each channel has an individually-adjustable pulse width modulation (PWM), grayscale (GS) brightness control with 65,536 steps and 128 steps of constant-current dot correction (DC). DC adjusts brightness deviation between channels. All channels have a 128-step global brightness control (BC). BC adjusts brightness deviation between the R, G, B color groups. The eight-step maximum current control (MC) selects the maximum output current range for all channels of each color group. GS, DC, BC, and MC data are accessible with a serial interface port. The Texas Instruments TLC6C5748-Q1 has three error flags: LED open detection (LOD), LED short detection (LSD), and thermal shutdown (TSD). The error detection results can be read with a serial interface port.

Features

  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results
    • Device temperature grade 1 (–40°C to +125°C ambient operating temperature)
  • 48 constant current sink output channels
  • Sink current capability with maximum MC, DC, and BC data
    • 23.9mA (VCC ≤ 3.6V, MC = 5)
    • 31.9mA (VCC > 3.6V, MC = 7)
  • Grayscale (GS) control
    • 16-bit (65, 536 steps) with enhanced spectrum or conventional PWM
  • Maximum Current (MC) control
    • 3 bits (8 steps) with a 3mA to 30mA range
    • 3 MC sets for each color group
  • Dot Correction (DC) control
    • 7-bits (128 steps) with a 26.2% to 100% range
  • Global brightness control (BC)
    • 7-bits (128 steps) with a 10% to 100% range
    • 3 BC sets for each color group
  • LED power-supply voltage: up to 10V
  • 3.0V to 5.5V power supply voltage
  • Constant-current accuracy
    • ±2% (Typ.), ±5% (Max.) channel-to-channel
    • ±2% (Typ.), ±4% (Max.) device-to-device
  • 25MHz data transfer rate
  • 33MHz grayscale control clock
  • Auto display repeat
  • Display timing reset
  • Auto data refresh (GS and DC only)
  • LED Open Detection (LOD)
  • LED Short Detection (LSD)
  • UVLO sets default data
  • Delay switching to prevent inrush current
  • –40°C to +125°C operating temperature

Applications

  • Automotive center information display
  • Automotive cluster display
  • Head-up display
  • Automotive lighting

Functional Block Diagram

Block Diagram - Texas Instruments TLC6C5748-Q1 48-Channel PWM LED Driver

Related Development Tool

Texas Instruments TLC6C5748EVM LED Driver Evaluation Module (EVM)

Helps users evaluate the characteristics, operation, and use of the TLC6C5748-Q1.

Learn Moreacerca de Texas Instruments TLC6C5748EVM LED Driver Evaluation Module (EVM) View Productsrelacionado con Texas Instruments TLC6C5748EVM LED Driver Evaluation Module (EVM)
Publicado: 2021-01-20 | Actualizado: 2025-03-11