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BQ24072T 使用不正常问题请教

Other Parts Discussed in Thread: BQ24075T, BQ24072T

  根据数据手册画的原理图,由于没有使用NTC所以图纸R15使用200K,R18使用51K,其他地方没有改动,但是在使用过程中发现,按道理当USB插入时状态指示灯D1应该亮起来,但是事实确是没有亮,充电指示灯也没有亮,这是参数配置有问题呢还是芯片坏掉了呢