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TLC5947-24-Channel, 12-Bit PWM LED Driver with Internal Oscillator
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TLC5947 - 24-Channel, 12-Bit PWM LED Driver with Internal Oscillator

TLC5947是TI公司(德州仪器)的一款标牌/线性产品,TLC5947是24-Channel, 12-Bit PWM LED Driver with Internal Oscillator,本站介绍了TLC5947的产品说明、应用、特性等,并给出了与TLC5947相关的TI元器件型号供参考.

TLC5947 - TLC5947 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator - TI德州仪器(Texas Instruments)

产品特性
  • 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
2 Applications
  • Static LED Displays
  • Message Boards
  • Amusement Illumination
  • TV Backlighting
产品说明

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.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
TLC5947HTSSOP (32)11.00 mm × 6.20 mm
VQFN (32)5.00 mm × 5.00 mm
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