我将直流电源输出的12V通过TPS5433A降压到5V再经过一个二极管然后接到BQ24070输入,测试发现恒流充电电流为191ma,预充电电流33ma,可是我ISET脚接的是2.61K的电阻按照公式恒流充电电流应该是407ma,不知道哪里的问题。
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