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BQ25798: BQ25798预充问题

Prodigy 150 points
Part Number: BQ25798

TI团队

         使用BQ25798,设置预充电压为<6.8V,充电电压10.5V,预充电流为120mA,在预充线路上增加一个30Ω的电阻后,预充电流会达不到120mA,预充处于异常状态。预充线路上不允许增加其他限流电阻吗?有没有公式可以计算线路上多大的电阻不会影响预充电流。