전원 관리 LED 드라이버 LED 디스플레이 드라이버

TLC5944

활성

6비트 도트 보정 및 사전 충전 FET를 지원하는 16채널 12비트 PWM LED 드라이버

제품 상세 정보

Features Dot Correction, Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Power good, Thermal shutdown Analog dimming steps 64 Data transfer rate (typ) (MHz) 30 Ch to ch accuracy (typ) (±%) 1 Rating Catalog Operating temperature range (°C) -40 to 85
Features Dot Correction, Error Flag, Fault Detection, LED Open Detection, LED Short to Ground Detection, LED Short to VLED Detection, PWM LED Driver, Power good, Thermal shutdown Analog dimming steps 64 Data transfer rate (typ) (MHz) 30 Ch to ch accuracy (typ) (±%) 1 Rating Catalog Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 28 62.08 mm² 9.7 x 6.4 VQFN (RHB) 32 25 mm² 5 x 5
  • 16 Channels, Constant Current Sink Output
  • 60-mA Capability (Constant Current Sink)
  • 12-Bit (4096 Steps) Grayscale Control with PWM
  • 6-Bit (64 Steps) Dot Correction with Sink Current
  • Internal Pre-Charge FET to Prevent LED Ghosting Phenomenon on Multiplexed LED Systems
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3.0 V to 5.5 V
  • Constant Current Accuracy:
    • Channel-to-Channel = ±1%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate
  • 33-MHz Grayscale Control Clock
  • Continuous Base LED Open Detection (LOD):
    • Detect LED opening and LED short to GND during display with auto output off function
  • Thermal Shutdown (TSD):
    • Automatic shutdown at over-temperature conditions
    • Restart under normal temperature
  • Pre-Thermal Warning (PTW):
    • High temperature operation alert
  • Readable Error Information:
    • LED Open Detection (LOD)
    • Thermal Error Flag (TEF)
    • Pre-Thermal Warning (PTW)
  • Noise Reduction:
    • 4-channel grouped delay to prevent inrush current
  • Operating Temperature: -40°C to +85°C
  • APPLICATIONS
    • Monochrome, Multicolor, Full-Color LED Displays Using Multiplexing System
    • LED Signboards Using Multiplexing System

All trademarks are the property of their respective owners.

  • 16 Channels, Constant Current Sink Output
  • 60-mA Capability (Constant Current Sink)
  • 12-Bit (4096 Steps) Grayscale Control with PWM
  • 6-Bit (64 Steps) Dot Correction with Sink Current
  • Internal Pre-Charge FET to Prevent LED Ghosting Phenomenon on Multiplexed LED Systems
  • LED Power-Supply Voltage up to 15 V
  • VCC = 3.0 V to 5.5 V
  • Constant Current Accuracy:
    • Channel-to-Channel = ±1%
    • Device-to-Device = ±3%
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate
  • 33-MHz Grayscale Control Clock
  • Continuous Base LED Open Detection (LOD):
    • Detect LED opening and LED short to GND during display with auto output off function
  • Thermal Shutdown (TSD):
    • Automatic shutdown at over-temperature conditions
    • Restart under normal temperature
  • Pre-Thermal Warning (PTW):
    • High temperature operation alert
  • Readable Error Information:
    • LED Open Detection (LOD)
    • Thermal Error Flag (TEF)
    • Pre-Thermal Warning (PTW)
  • Noise Reduction:
    • 4-channel grouped delay to prevent inrush current
  • Operating Temperature: -40°C to +85°C
  • APPLICATIONS
    • Monochrome, Multicolor, Full-Color LED Displays Using Multiplexing System
    • LED Signboards Using Multiplexing System

All trademarks are the property of their respective owners.

The TLC5944 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant sink current (dot correction) steps. The dot correction (DC) adjusts for brightness variations between LEDs. Both grayscale (GS) control and DC are accessible via a common serial interface port. The maximum current value of all 16 channels can be set by a single external resistor.

The TLC5944 has an internal pre-charge FET to prevent the ghost-lighting phenomenon that occurs on multiplexed LED systems. The TLC5944 has three error detection circuits for LED open detection (LOD), a thermal error flag (TEF), and a pre-thermal warning (PTW). The LOD detects a broken or disconnected LED, and a shorted LED to GND during the display period. The TEF indicates a too-high temperature condition; when the TEF is set, all output drivers are turned off by the thermal shutdown (TSD) protection. Additionally, when the TEF is cleared, all output drivers are restarted. The PTW indicates that the IC is operating in a high temperature condition. The output drivers remain on when PTW is set.

The TLC5944 is a 16-channel, constant current sink driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant sink current (dot correction) steps. The dot correction (DC) adjusts for brightness variations between LEDs. Both grayscale (GS) control and DC are accessible via a common serial interface port. The maximum current value of all 16 channels can be set by a single external resistor.

The TLC5944 has an internal pre-charge FET to prevent the ghost-lighting phenomenon that occurs on multiplexed LED systems. The TLC5944 has three error detection circuits for LED open detection (LOD), a thermal error flag (TEF), and a pre-thermal warning (PTW). The LOD detects a broken or disconnected LED, and a shorted LED to GND during the display period. The TEF indicates a too-high temperature condition; when the TEF is set, all output drivers are turned off by the thermal shutdown (TSD) protection. Additionally, when the TEF is cleared, all output drivers are restarted. The PTW indicates that the IC is operating in a high temperature condition. The output drivers remain on when PTW is set.

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기술 자료

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4개 모두 보기
유형 직함 날짜
* Data sheet 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction and Pre-Charge FET datasheet (Rev. A) 2009/07/07
White paper Common LED Functions and LED Driver Design Considerations 2020/09/21
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
EVM User's guide TLC5944EVM-358 User's Guide 2009/04/15

설계 및 개발

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

평가 모듈(EVM)용 GUI

TLC594XEVM-SW TLC594xEVM Software Version 2.0.1.5

The TLC594x Graphical User Interface (GUI) allows users to change colors and interact with the TLC594x board. The program can be used with or without the board attached.

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
LED 디스플레이 드라이버
TLC5943 7비트 장치 레벨 밝기 제어 기능을 지원하는 16비트 ES-PWM TLC5944 6비트 도트 보정 및 사전 충전 FET를 지원하는 16채널 12비트 PWM LED 드라이버 TLC5946 6비트 도트 교정을 지원하는 16채널, 12비트 PWM LED 드라이버
시뮬레이션 모델

TLC5944 IBIS Model

SLIM263.ZIP (51 KB) - IBIS Model
시뮬레이션 툴

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HTSSOP (PWP) 28 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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