上電時(shí)VCC為20V,5秒鐘后切換為12V,3842正常工作,但是6腳沒有輸出..無法驅(qū)動(dòng)開關(guān)管....測量數(shù)據(jù):
          1腳8V,
          2腳2V,
          3腳0V,
          4腳2.4V,
          7腳11V,
          8腳5V.

拉兄弟一把啊.........