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运用于无线充电电源的外围接口电路设计

作者：时间：2016-12-06 来源：网络

　　电路分析：以前使用的LT1732-8.4V作为充电芯片1A充电电流，外电源检测使用的是1732的ACPR脚，没有外电源插入时是CPU外围上拉的3.3V，有外电源插入时是低电平，这样可以比较方便的告知CPU外电源插入的情况！

　　现在想提高充电电流使用LT3650-8.4V，充电提高到2A了，但是没有外电源检测输出！LT3651有就是芯片脚太多！

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关键词： 无线充电外围接口电路设

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