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请问BQ2057C充单节3.7V锂电池,限流电阻0.3R,当供电电压为5V时,电流只有100多mA,只有当电压升高到6V左右时,电流才能达到300多mA,请问是什么原因?

不知道如何发图。。。这里描述一下吧。

电源进来串SS34,限流电阻0.3R,调整管采用FZT788B,其驱动电阻1k(改为200R没有作用)。