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您好,
芯片的输入功率等于芯片本身的功耗加输出功率。那么相应的,芯片的供电电流为静态电流加 输出电流,而这个输出电流需要用输出功率换算为输入电压下的输出电流。比如在5V输出电压下输出±2mA,那么输出功率就是±10mW,对应的从电源抽取的电流就是(10/12)mA。这个电流加上静态电流就是IC的供电电流。