TLC6946
- 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.
기술 자료
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A) | PDF | HTML | 2019/01/07 |
White paper | Common LED Functions and LED Driver Design Considerations | 2020/09/21 | ||
User guide | Using the TLC694x VQFN Evaluation Module | 2019/02/15 | ||
EVM User's guide | TLC6946 Evaluation Module User's Guide | 2018/05/24 |
설계 및 개발
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BOOSTXL-TLC6946EVM — TLC6946 16채널 32-멀티플렉싱 16비트 ES-PWM 정전류 LED 드라이버 평가 모듈
BOOSTXL-TLC6948EVM — TLC694x 16채널 32-, 48-멀티플렉싱 16비트 ES-PWM 정전류 LED 드라이버 평가 모듈
TLC6946 Unencrypted PSpice Transient Model Package (Rev. B)
PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®
TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
---|---|---|
SSOP (DBQ) | 24 | Ultra Librarian |
VQFN (RGE) | 24 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
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