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我看了手册说是4.35~20V，但我用5V输入无法充电，使用8.4V适配器是可以。
BQ24103 是同步降压的设计架构，最大占空比D是100%，D=Vo/Vin,所以在设计时，输入电压都必须比较输出电压高或者相等(在100%占空比时)。
很感谢答复
