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Drivers para pantallas LED

TLC6946

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Controlador LED ES-PWM de corriente constante de 16 canales y 16 bits con multiplexado de 32 canales

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TLC6946

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Detalles del producto

Features Fault Detection, LED Open Detection, PWM LED Driver, Pre-Charge FET, SRAM, Thermal shutdown Analog dimming steps 128 Data transfer rate (typ) (MHz) 33 Ch to ch accuracy (typ) (±%) 1.5 Rating Catalog Operating temperature range (°C) -40 to 85
Features Fault Detection, LED Open Detection, PWM LED Driver, Pre-Charge FET, SRAM, Thermal shutdown Analog dimming steps 128 Data transfer rate (typ) (MHz) 33 Ch to ch accuracy (typ) (±%) 1.5 Rating Catalog Operating temperature range (°C) -40 to 85
SSOP (DBQ) 24 51.9 mm² (8.65 mm × 6 mm) VQFN (RGE) 24 16 mm² (4 mm × 4 mm)
  • Power Supply Voltage Ranges
    • VCC Voltage Range: 3 V to 5.5 V
    • VLED Voltage Range: Up to VCC + 0.3 V
  • 16 Constant-Current-Sink Channels
    • 0.3 mA to 25 mA (3 V ≤ VCC ≤ 5.5 V)
    • Channel Current Deviation: ±1% (typical)
    • Device Current Deviation: ±1% (typical)
    • Low Knee Voltage: 0.3 V (typical) at 10 mA
  • 7-Bit (128 Steps) Global Brightness Control (BC)
  • 16-Bit (65,536 Steps) Enhanced Spectrum PWM Grayscale Control
  • Built-In Memory Supports 32 Multiplexing for TLC6946 and 48 Multiplexing for TLC6948
  • LED Display Performance Enhancement
    • Low-Grayscale Uniformity Improvement
    • Low-Grayscale Coupling Issue Elimination
    • Ghosting Removal and Caterpillar Elimination
  • High-Speed Serial-Data Interface
    • Data-Shift Clock: 33 MHz (maximum)
    • Grayscale Control Clock: 33 MHz (maximum)
    • Supports Dual-Edge Grayscale Control
  • Diagnostics and Protection
    • LED-Open Detection (LOD)
    • IREF Resistor Short Protection (ISP)
    • Thermal Shutdown (TSD)
  • Smart Power-Save Mode
  • Power Supply Voltage Ranges
    • VCC Voltage Range: 3 V to 5.5 V
    • VLED Voltage Range: Up to VCC + 0.3 V
  • 16 Constant-Current-Sink Channels
    • 0.3 mA to 25 mA (3 V ≤ VCC ≤ 5.5 V)
    • Channel Current Deviation: ±1% (typical)
    • Device Current Deviation: ±1% (typical)
    • Low Knee Voltage: 0.3 V (typical) at 10 mA
  • 7-Bit (128 Steps) Global Brightness Control (BC)
  • 16-Bit (65,536 Steps) Enhanced Spectrum PWM Grayscale Control
  • Built-In Memory Supports 32 Multiplexing for TLC6946 and 48 Multiplexing for TLC6948
  • LED Display Performance Enhancement
    • Low-Grayscale Uniformity Improvement
    • Low-Grayscale Coupling Issue Elimination
    • Ghosting Removal and Caterpillar Elimination
  • High-Speed Serial-Data Interface
    • Data-Shift Clock: 33 MHz (maximum)
    • Grayscale Control Clock: 33 MHz (maximum)
    • Supports Dual-Edge Grayscale Control
  • Diagnostics and Protection
    • LED-Open Detection (LOD)
    • IREF Resistor Short Protection (ISP)
    • Thermal Shutdown (TSD)
  • Smart Power-Save Mode

In high-density, fine-pitch LED panel applications, the performance demand for multi-channel LED drivers is increasing to achieve high multiplexing, high PWM resolution, and high refresh rates. To meet strict display quality requirements, the LED drivers must have the ability to solve various issues in different LED-matrix application scenarios.

The TLC694x device is a 16-channel, constant-current-sink LED driver. Each channel has an individually adjustable 65,536 steps of PWM grayscale control. The maximum constant-current value of all 16 channels is set by a single external resistor with 128 steps of global brightness control from 0.3 mA to 25 mA.

The TLC694x device integrates enhanced circuits to solve the various display issues in fine-pitch LED display applications: the low-grayscale uniformity issue, coupling issue, ghosting issue, and caterpillar issue.

The TLC694x device features an LED-open detection function, and the error detection results can be read via a serial data interface port. Thermal shutdown and IREF resistor short protection ensure a higher system reliability. The TLC694x device also has an smart power-save mode that sets the total current consumption to 1 mA (typical) when all outputs are off.

In high-density, fine-pitch LED panel applications, the performance demand for multi-channel LED drivers is increasing to achieve high multiplexing, high PWM resolution, and high refresh rates. To meet strict display quality requirements, the LED drivers must have the ability to solve various issues in different LED-matrix application scenarios.

The TLC694x device is a 16-channel, constant-current-sink LED driver. Each channel has an individually adjustable 65,536 steps of PWM grayscale control. The maximum constant-current value of all 16 channels is set by a single external resistor with 128 steps of global brightness control from 0.3 mA to 25 mA.

The TLC694x device integrates enhanced circuits to solve the various display issues in fine-pitch LED display applications: the low-grayscale uniformity issue, coupling issue, ghosting issue, and caterpillar issue.

The TLC694x device features an LED-open detection function, and the error detection results can be read via a serial data interface port. Thermal shutdown and IREF resistor short protection ensure a higher system reliability. The TLC694x device also has an smart power-save mode that sets the total current consumption to 1 mA (typical) when all outputs are off.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A) PDF | HTML 7/01/2019
Informe Common LED Functions and LED Driver Design Considerations 21/09/2020

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

BOOSTXL-TLC6946EVM — Módulo de evaluación de controlador LED de corriente constante ES-PWM de 16 bits y multiplexado de 3

El módulo de evaluación TLC6946 (BOOSTXL-TLC6946EVM) es una referencia para la demostración de ingeniería y la evaluación del controlador LED de corriente constante ES-PWM de 16 bits y 32 canales de multiplexación múltiple TLC6946. El BOOSTXL-TLC6946EVM utiliza tres dispositivos TLC6946 para (...)
Guía del usuario: PDF
Productos y hardware compatibles
En inventario
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No disponible
Placa de evaluación

BOOSTXL-TLC6948EVM — Módulo de evaluación de controlador LED de corriente constante ES-PWM de 16 bits y multiplexado de 3

El módulo de evaluación TLC694x (BOOSTXL-TLC6948EVM) es una referencia para la demostración y evaluación de ingeniería del controlador LED de corriente constante ES-PWM TLC694x de 16 canales, 16 bits de multiplexación 32 o 48, con encapsulado QFN. El BOOSTXL-TLC6948EVM utiliza tres dispositivos (...)
Guía del usuario: PDF
Productos y hardware compatibles
En inventario
Límite:
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No disponible
Modelo de simulación

TLC6946 IBIS MODEL

SLVMD45.ZIP (44 KB) - Modelo IBIS
Productos y hardware compatibles
Modelo de simulación

TLC6946 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCX8B.ZIP (147 KB) - Modelo PSpice
Productos y hardware compatibles
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SSOP (DBQ) 24 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian
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Soporte y capacitación

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