PROBLEM TO BE SOLVED: To provide a motor driving device capable of reducing a risk that opening and closing of a valve is hindered by dust or the like.SOLUTION: A motor driving device 2k for driving a DC motor 24 that opens and closes a valve of a faucet, includes: a load current detection circuit 201 for detecting a load current applied to the DC motor 24 according to a rotation of the DC motor 24； and a motor control circuit 202 for controlling the DC motor 24 on the basis of the load current.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】ゴミ等によってバルブの開閉が妨げられるリスクを低減できるモータ駆動装置を提供する。【解決手段】水栓のバルブを開閉させる直流モータ２４を駆動するモータ駆動装置２ｋであって、直流モータ２４の回転に応じて直流モータ２４にかかる負荷電流を検出する負荷電流検出回路２０１と、前記負荷電流に基づいて直流モータ２４を制御するモータ制御回路２０２と、を備える、モータ駆動装置２ｋ。【選択図】図３
