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TLC6946

現行

支援 32 路多工的 16 通道 16 位元 ES-PWM 定電流 LED 驅動器

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產品規格表

TLC6946

現行
產品規格表 立即訂購

產品詳細資料

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 x 6 VQFN (RGE) 24 16 mm² 4 x 4
  • 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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類型 標題 日期
* Data sheet TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A) PDF | HTML 2019年 1月 7日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
User guide Using the TLC694x VQFN Evaluation Module 2019年 2月 15日
EVM User's guide TLC6946 Evaluation Module User's Guide 2018年 5月 24日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

BOOSTXL-TLC6946EVM — TLC6946 16 通道 32 多工 16 位元 ES-PWM 定電流 LED 驅動器評估模組

The TLC6946 evaluation module (BOOSTXL-TLC6946EVM) is a reference for engineering demonstration and evaluation of the TLC6946 16-channel 32-multiplexing 16-bit ES-PWM constant-current LED driver. The BOOSTXL-TLC6946EVM uses three TLC6946 devices to drive 16 RGB LEDs, each device controlling one (...)
使用指南: PDF
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開發板

BOOSTXL-TLC6948EVM — TLC694x 16 通道 32-48 多工 16 位元 ES-PWM 定電流 LED 驅動器評估模組

The TLC694x evaluation module (BOOSTXL-TLC6948EVM) is a reference for engineering demonstration and evaluation of the TLC694x 16-channel 32-,  48-multiplexing 16-bit ES-PWM constant-current LED driver with QFN package. The BOOSTXL-TLC6948EVM uses three TLC694x VQFN package devices to drive 16 (...)
使用指南: PDF
TI.com 無法提供
模擬型號

TLC6946 IBIS MODEL

SLVMD45.ZIP (44 KB) - IBIS Model
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模擬型號

TLC6946 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCX8B.ZIP (147 KB) - PSpice Model
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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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VQFN (RGE) 24 檢視選項
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  • 進行中可靠性監測
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