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关于lmr14006y的应用问题

我想输出12V电流约0.3A,要求输入18-32V都能正常工作,使用了lmr14006y,但是按器件推荐的电路,Cboot为0.1uF,Cout为10uF,电阻由147k和10k分压,但是没有画电感,请问,那个电感必须加么?具体作用是什么?大小为3.3uH?加了之后能满足我的需求么?小白一个,谢谢