可不可以这么理解:上电瞬间 ,电流直接由R35经过电容C15(0.1uf),此时EN端的电压为电源电压12V,大于4V,启动缓启动程序(A soft start process begins when the input voltage rises to 4.0V and voltage on EN pin is HIGH. In the soft start process, the output voltage is typically ramped to regulation voltage in 2.2ms. The 2.2ms soft start time is set internally.) 当电容充电到13K与4.7K的分压值时(3.2V),此时缓启动已经完成。EN脚的电压已经小于了4V,不需要缓启动。