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TLC5947

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具有内部振荡器的 24 通道 12 位 PWM LED 驱动器

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TLC5947

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产品详情

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
HTSSOP (DAP) 32 89.1 mm² 11 x 8.1 VQFN (RHB) 32 25 mm² 5 x 5
  • 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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类型 标题 下载最新的英语版本 日期
* 数据表 TLC5947 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator 数据表 (Rev. B) PDF | HTML 2015年 1月 14日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 Hardware Design Considerations for a Wireless LED based Display Design 2014年 6月 11日

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仿真模型

TLC5947 IBIS Model

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  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
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  • 持续可靠性监测
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