TLC6946

활성

32 멀티플렉싱을 사용한 16채널, 16비트 ES-PWM 정전류 LED 드라이버

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데이터 시트

document-pdfAcrobat TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A) (영어) PDF | HTML

TLC6946

활성

데이터 시트

지금 주문하기

제품 상세 정보

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 mm × 6 mm)

VQFN (RGE)

24

16 mm² (4 mm × 4 mm)

Power Supply Voltage Ranges
- V_CC Voltage Range: 3 V to 5.5 V
- V_LED Voltage Range: Up to V_CC + 0.3 V
16 Constant-Current-Sink Channels
- 0.3 mA to 25 mA (3 V ≤ V_CC ≤ 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
- V_CC Voltage Range: 3 V to 5.5 V
- V_LED Voltage Range: Up to V_CC + 0.3 V
16 Constant-Current-Sink Channels
- 0.3 mA to 25 mA (3 V ≤ V_CC ≤ 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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2개 모두 보기

상위 문서	유형	직함	형식 옵션	최신 영어 버전 다운로드	날짜
*	데이터 시트	TLC694x 16-Channel 32-, 48-Multiplexing 16-Bit ES-PWM Constant-Current LED Driver datasheet (Rev. A)	PDF \| HTML		2019. 1. 7
	백서	Common LED Functions and LED Driver Design Considerations			2020. 9. 21

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

BOOSTXL-TLC6946EVM — TLC6946 16채널 32-멀티플렉싱 16비트 ES-PWM 정전류 LED 드라이버 평가 모듈

TLC6946 평가 모듈(BOOSTXL-TLC6946EVM)은 TLC6946 16채널 32멀티플렉싱 16비트 ES-PWM 정전류 LED 드라이버의 엔지니어링 데모 및 평가를 위한 레퍼런스입니다. BOOSTXL-TLC6946EVM은 3개의 TLC6946 장치를 사용하여 각 장치가 하나의 색상을 제어하는 16개의 RGB LED를 구동합니다. 또한 이 EVM은 LOD(LED 개방 감지) 및 ISP(IREF 저항 단락 보호)를 확인하는 기능을 제공합니다.

사용 설명서: PDF

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