MIC4690YM TR MIC4690YM 电源IC MIC4690YM 模块 MIC4690YMTR MIC4690YM-TR MIC4690YM-TR 单片机MCU MIC4700AKKSGNHWS MIC47050-1.2YML TR MIC47050-1.2YMLTR MIC47050-1.2YML-TR