请教:这是什么芯片?8981?有图

上面文字写的是
  A613MLX
  8981-003
  ca812 V4
  
功能估计是PWM,驱动场效应管

这是什么芯片啊?单片机,还是什么?
谁有datasheet啊?在网上找不到啊
谢谢
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