TLC5955
- 48 Constant-Current Sink Output Channels
- Sink Current Capability with Maximum MC, DC, and BC Data:
- 23.9 mA (VCC ≤ 3.6 V, MC = 5)
- 31.9 mA (VCC > 3.6 V, MC = 7)
- Grayscale (GS) Control:
- 16-Bit (65,536 Steps) with Enhanced Spectrum or Conventional PWM
- Maximum Current (MC) Control:
- 3 Bits (8 Steps) with a 3-mA to 30-mA Range
- 3 MC Sets for Each Color Group
- Dot Correction (DC) Control:
- 7 Bits (128 Steps) with a 26.2% to 100% Range
- Global Brightness Control (BC):
- 7 Bits (128 Steps) with a 10% to 100% Range
- 3 BC Sets for Each Color Group
- LED Power-Supply Voltage: Up to 10 V
- VCC: 3.0 V to 5.5 V
- Constant-Current Accuracy:
- Channel-to-Channel: ±2% (typ), ±5% (max)
- Device-to-Device: ±2% (typ), ±4% (max)
- Data Transfer Rate: 25 MHz
- Grayscale Control Clock: 33 MHz
- Auto Display Repeat
- Display Timing Reset
- Auto Data Refresh (GS and DC Only)
- LED Open Detection (LOD)
- LED Short Detection (LSD)
- UVLO Sets Default Data
- Delay Switching to Prevent Inrush Current
- Operating Temperature: –40°C to +85°C
The TLC5955 is a 48-channel, constant-current sink 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 between the R, G, B color group. The eight-step maximum current control (MC) selects the maximum output current range for all channels of each color group. GS, DC, BC, and MC data are accessible with a serial interface port.
The TLC5955 has two error flags: LED open detection (LOD) and LED short detection (LSD). The error detection results can be read with a serial interface port.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | TLC5955 48-Channel, 16-Bit, PWM LED Driver with DC, BC, LED Open-Short Detection, and Internal Current Setting datasheet | PDF | HTML | 2014. 3. 7 | |
| 백서 | Common LED Functions and LED Driver Design Considerations | 2020. 9. 21 | |||
| 기술 문서 | Improve the user experience with an LED ring | PDF | HTML | 2017. 11. 9 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| HTSSOP (DCA) | 56 | Ultra Librarian |
| VQFN (RTQ) | 56 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.