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bq24032a 问题

Other Parts Discussed in Thread: BQ24032A

我用bq24032a设计了一个电源管理电路,USB输入,将USBPG端连接CE用来激活芯片,现在不接电池的情况下,上电半秒左右即掉电,不知是不是用USBPG驱动CE的方法不对?