TLC5948A
- 16 Constant-Current Sink Output Channels
- Sink Current Capability with Maximum DC and BC Data:
- 2 mA to 45 mA (VCC ≤ 3.6 V)
- 2 mA to 60 mA (VCC > 3.6 V)
- Dot Correction (DC):
- 7-Bit (128 Steps) with 0% to 100% Range
- Global Brightness Control (BC):
- 7-Bit (128 Steps) with 25% to 100% Range
- Grayscale Control (GS) with Enhanced Spectrum or Conventional PWM:
- 16-Bit (65,536 Steps)
- LED Power-Supply Voltage: Up to 10 V
- VCC: 3.0 V to 5.5 V
- Constant-Current Accuracy:
- Channel-to-Channel: ±0.6% (typ), ±2% (max)
- Device-to-Device: ±1% (typ), ±4% (max)
- Data Transfer Rate: 33 MHz
- Grayscale Control Clock: 33 MHz
- Auto Display Repeat and Auto Data Refresh
- Display Timing Reset
- Power-Save Mode to Minimize VCC Current
- LOD and LSD with Invisible Detection
Mode (IDM) - Output Leakage Detection (OLD)
- Current Reference Terminal Short Flag (ISF)
- Thermal Shutdown (TSD) and Error Flag (TEF)
- Pre-Thermal Warning (PTW)
- Four-Channel Grouped Delay Switching to Prevent Inrush Current
- Operating Temperature: –40°C to +85°C
The TLC5948A is a 16-channel, constant-current sink LED 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 with other LED drivers. GS, DC, and BC data are accessible with a serial interface port.
The TLC5948A has six error flags: LED open detection (LOD), LED short detection (LSD), output leakage detection (OLD), reference current terminal short flag detection (ISF), pre-thermal warning (PTW), and thermal error flag (TEF). The error detection results can be read with a serial interface port.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | 16-Channel, 16-Bit, ES-PWM, LED Driver for 7-Bit DC and (Replaced SBVS173A) datasheet (Rev. A) | 2012/12/18 | |||
| 白皮書 | Common LED Functions and LED Driver Design Considerations | 2020/9/21 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SSOP (DBQ) | 24 | Ultra Librarian |
| HTSSOP (PWP) | 24 | Ultra Librarian |
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