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TLC6948

現行

支援 48 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

TLC6948

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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技術文件

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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

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

TLC6946 評估模組 (BOOSTXL-TLC6946EVM) 是 TLC6946 16 通道 32 多工 16 位元 ES-PWM 定電流 LED 驅動器的工程展示與評估之參考。BOOSTXL-TLC6946EVM 使用三個 TLC6946 裝置以驅動 16 個 RGB LED，每個裝置控制一種色彩。此外，EVM 提供驗證 LED 斷路偵測 (LOD) 和 IREF 電阻短路保護 (ISP) 的功能。
使用指南: PDF
TI.com 無法提供
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

TLC694x 評估模組 (BOOSTXL-TLC6948EVM) 是採用 QFN 封裝之 TLC694x 16 通道、32-、48- 多工 16 位元 ES-PWM 定電流 LED 驅動器的工程展示與評估之參考。BOOSTXL-QFN TLC6948EVM 使用三個 TLC694x VQFN 封裝裝置以驅動 16 個 RGB LED，每個裝置控制一種色彩。此外，EVM 提供驗證 LED 斷路偵測 (LOD) 和 IREF 電阻短路保護 (ISP) 的功能。
使用指南: PDF
TI.com 無法提供
模擬型號

TLC6948 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCX9B.ZIP (146 KB) - PSpice Model
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模擬工具

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PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

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SSOP (DBQ) 24 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian
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