TLC6948
- 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.
技術文件
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)。
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
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
TLC6948 Unencrypted PSpice Transient Model Package (Rev. B)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SSOP (DBQ) | 24 | Ultra Librarian |
VQFN (RGE) | 24 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點