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BQ24133实际充电电流与设置的误差较大,帮忙分析下原因

Other Parts Discussed in Thread: BQ24133

电路设置的参数计算Fastcharge应该为1.6A,实际测出来只有1.36A左右,手册上写的误差在5%左右,实际怎么会相差这么大,ISET脚使用的是32.4k与300k的电阻分压,参考电压为VREF,实测Viset与理论计算电压一样,就是电流与实际不一样