BQ2057 stsa 脚 三个状态,高阻状态起什么作用? 现在测试发现STSA 脚没装电池,和充满都是低电平,那么我想判断到时有没装电池该怎么判断呢?
麻烦发个参考电路谢谢
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STAT脚的高阻态表明温度报错或是睡眠模式。STAT为低说明电池满充,没装电池的话相当于电池端是个很小的电容,瞬间就会充到设定电压,所以显示满充状态。