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BQ24092充电电流只有100mA左右,各位大神帮忙看看。

Other Parts Discussed in Thread: BQ24092

电源适配器规格为5V/2A,锂电池为3.7V,1800mA/h,电源适配器直接接锂电池,串入数字万用表用直流电流档20A档位测量得到的数值为1.5A。加上BQ24092充电芯片以后,串入数字万用表用直流电流档20A档位测量得到的数值为0.5A,但是用直流电流档200mA档位测量得到的数值为0.1A,BQ24092充电电路是按照0.5A的充电电流来设计的,查阅过BQ24092芯片手册,也更改过相关电阻阻值,充电电流始终只有0.1A左右,锂电池充电非常缓慢,下图为设计的BQ24092充电电路图。