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TLC5947

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LED-Treiber mit internem Oszillator, 24 Kanälen und 12-Bit-PWM

Produktdetails

Number of channels 24 LED current per channel (mA) 30 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 24 LED current per channel (mA) 30 Vin (min) (V) 3 Vin (max) (V) 5.5 Features PWM control, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RHB) 32 25 mm² (5 mm × 5 mm) HTSSOP (DAP) 32 89.1 mm² (11 mm × 8.1 mm)
  • 24 Channels, Constant-Current Sink Output
  • 30-mA Capability (Constant-Current Sink)
  • 12-Bit (4096 Steps) PWM Grayscale Control
  • LED Power-Supply Voltage Up to 30 V
  • VCC = 3.0 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±2% (Typical)
    • Device-to-Device = ±2% (Typical)
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate (Standalone)
  • 15-MHz Data Transfer Rate (Cascaded Devices,
    SCLK Duty = 50%)
  • Shift Out Data Changes With Falling Edge to
    Avoid Data Shift Errors
  • Auto Display Repeat
  • 4-MHz Internal Oscillator
  • Thermal Shutdown (TSD):
    • Automatic Shutdown at OverTemperature Conditions
    • Restart Under Normal Temperature
  • Noise Reduction:
    • 4-Channel Grouped Delay to Prevent Inrush Current
  • Operating Temperature: –40°C to 85°C
  • 24 Channels, Constant-Current Sink Output
  • 30-mA Capability (Constant-Current Sink)
  • 12-Bit (4096 Steps) PWM Grayscale Control
  • LED Power-Supply Voltage Up to 30 V
  • VCC = 3.0 V to 5.5 V
  • Constant-Current Accuracy:
    • Channel-to-Channel = ±2% (Typical)
    • Device-to-Device = ±2% (Typical)
  • CMOS Logic Level I/O
  • 30-MHz Data Transfer Rate (Standalone)
  • 15-MHz Data Transfer Rate (Cascaded Devices,
    SCLK Duty = 50%)
  • Shift Out Data Changes With Falling Edge to
    Avoid Data Shift Errors
  • Auto Display Repeat
  • 4-MHz Internal Oscillator
  • Thermal Shutdown (TSD):
    • Automatic Shutdown at OverTemperature Conditions
    • Restart Under Normal Temperature
  • Noise Reduction:
    • 4-Channel Grouped Delay to Prevent Inrush Current
  • Operating Temperature: –40°C to 85°C

The TLC5947 is a 24-channel, constant-current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor.

The TLC5947 has a thermal shutdown (TSD) function that turns off all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions.

The TLC5947 is a 24-channel, constant-current sink LED driver. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps. PWM control is repeated automatically with the programmed grayscale (GS) data. GS data are written via a serial interface port. The current value of all 24 channels is set by a single external resistor.

The TLC5947 has a thermal shutdown (TSD) function that turns off all output drivers during an over-temperature condition. All of the output drivers automatically restart when the temperature returns to normal conditions.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TLC5947 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator datasheet (Rev. B) PDF | HTML 14.01.2015
Whitepaper Common LED Functions and LED Driver Design Considerations 21.09.2020
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis Hardware Design Considerations for a Wireless LED based Display Design 11.06.2014

Design und Entwicklung

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Simulationsmodell

TLC5947 IBIS Model

SLIM264.ZIP (33 KB) - IBIS-Modell
Unterstützte Produkte und Hardware
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN (RHB) 32 Ultra Librarian
HTSSOP (DAP) 32 Ultra Librarian

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