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Diodes Incorporated AL8861 1.5A LED驱动器

Diodes Incorporated AL8861 1.5A LED驱动器是一款磁滞模式直流-直流降压转换器，设计用于从高于LED电压的电压源高效驱动单个或多个串联LED。 AL8861 LED驱动器在4.5V至40V的输入电源下工作，支持各种应用。 AL8861可根据输入电压和外部元件提供高达40W的输出功率。 AL8861 LED驱动器采用TSOT25、MSOP-8EP和SOT89-5封装，实现设计灵活性。

For increased robustness, the AL8861’s Power switch incorporates short-circuit current protection. Dimming can be realized by applying an external control signal to the VSET pin. The VSET pin accepts either a DC voltage signal or a PWM (Pulse Width Modulation) signal. The AL8861 LED Driver is offered in TSOT25, MSOP-8EP, and SOT89-5 packages for design flexibility.

特性

  • Low BOM count
  • Wide 4.5V to 40V input voltage range
  • Output current up to 1.5A
  • Internal 40V NDMOS switch
  • Typical 5% output current accuracy
  • Multi-function VSET supports analog and PWM dimming
  • 0% to 100% analog dimming range
  • Soft-Start
  • High efficiency (up to 97%)
  • LED short protection
  • Inherent open-circuit LED protection
  • Rs short protection
  • Over-temperature protection (OTP)
  • Up to 1MHz switching frequency
  • Pb-free TSOT25, MSOP-8EP, and SOT89-5 packages

应用

  • LED Retrofit for Low Voltage Halogen
  • Low Voltage Industrial Lighting
  • LED Backlighting
  • Illuminated Signs
  • External Driver with Multiple Channels
发布日期: 2017-06-20 | 更新日期: 2022-03-11