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TLC5940

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16-Kanal-LED-Treiber mit EEPROM-Punktkorrektur und PWM-Graustufenreglung

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Datenblatt

TLC5940

AKTIV
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Produktdetails

Number of channels 16 LED current per channel (mA) 120 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 16 LED current per channel (mA) 120 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Serial interface Operating temperature range (°C) -40 to 85 Rating Catalog
HTSSOP (PWP) 28 62.08 mm² (9.7 mm × 6.4 mm) VQFN (RHB) 32 25 mm² (5 mm × 5 mm)
  • 16 Channels
  • 12 bit (4096 Steps) Grayscale PWM Control
  • Dot Correction
    • 6 bit (64 Steps)
    • Storable in Integrated EEPROM
  • Drive Capability (Constant-Current Sink)
    • 0 mA to 60 mA (VCC < 3.6 V)
    • 0 mA to 120 mA (VCC > 3.6 V)
  • LED Power Supply Voltage up to 17 V
  • VCC = 3 V to 5.5 V
  • Serial Data Interface
  • Controlled In-Rush Current
  • 30 MHz Data Transfer Rate
  • CMOS Level I/O
  • Error Information
    • LOD: LED Open Detection
    • TEF: Thermal Error Flag
  • 16 Channels
  • 12 bit (4096 Steps) Grayscale PWM Control
  • Dot Correction
    • 6 bit (64 Steps)
    • Storable in Integrated EEPROM
  • Drive Capability (Constant-Current Sink)
    • 0 mA to 60 mA (VCC < 3.6 V)
    • 0 mA to 120 mA (VCC > 3.6 V)
  • LED Power Supply Voltage up to 17 V
  • VCC = 3 V to 5.5 V
  • Serial Data Interface
  • Controlled In-Rush Current
  • 30 MHz Data Transfer Rate
  • CMOS Level I/O
  • Error Information
    • LOD: LED Open Detection
    • TEF: Thermal Error Flag

The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.

The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (dot correction). The dot correction adjusts the brightness variations between LED channels and other LED drivers. The dot correction data is stored in an integrated EEPROM. Both grayscale control and dot correction are accessible through a serial interface. A single external resistor sets the maximum current value of all 16 channels.

The TLC5940 features two error information circuits. The LED open detection (LOD) indicates a broken or disconnected LED at an output terminal. The thermal error flag (TEF) indicates an overtemperature condition.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TLC5940 16-Channel LED Driver With DOT Correction and Grayscale PWM Control datasheet (Rev. D) PDF | HTML 03.12.2015
Whitepaper Common LED Functions and LED Driver Design Considerations 21.09.2020
Anwendungshinweis Grayscale and Dot-Corrected LED Display Using TLC5941 and MSP430F427 (Rev. B) PDF | HTML 27.09.2018
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis Hardware Design Considerations for a Wireless LED based Display Design 11.06.2014
Anwendungshinweis Using the TLC5940 with Higher LED Supply Voltages and Series LEDs 20.08.2007
Anwendungshinweis LED Driver--Paralleled Outputs Provide High Current Outputs 25.09.2006
Anwendungshinweis TLC5940 One Wire Control--Eliminating Microprocessor Control for Integr LED Driv 25.09.2006
Anwendungshinweis LED Display System Module Using Cascading TLC5940 Devices 06.07.2006
Analog Design Journal TLC5940 PWM dimming provides superior color quality in LED video displays 18.04.2006
Benutzerhandbuch TLC5940 Programming Flow Chart 26.01.2006
Analog Design Journal TLC5940 dot correction compensates for variations in LED brightness 10.10.2005

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Software-Entwicklungskit (SDK)

LED-FRAME-DESIGNER — LED Frame Designer

LED Frame Designer Software allows the user to individually control the Dot Correction and PWM dimming levels for each LED on the TLC59xx EVM. The software also allows the user to program and play multiple LED “frames” to create different lighting patterns on the EVM.

Unterstützte Produkte und Hardware
Simulationsmodell

TLC5940 IBIS Model

SLIM237.ZIP (47 KB) - IBIS-Modell
Unterstützte Produkte und Hardware
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 28 Ultra Librarian
VQFN (RHB) 32 Ultra Librarian
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