Power supply unit for aerosol inhaler

A power supply unit for an aerosol inhaler comprising:

• a power supply configured to supply power to a load that atomizes an aerosol source;
• a temperature sensor configured to acquire a temperature of the power supply;
• a controller configured to control at least one of charging of the power supply and discharging to the load based on an output of the temperature sensor;
• and
• a circuit board on which a plurality of elements including the temperature sensor and the controller are mounted, wherein
• the circuit board includes a first surface and a second surface which is a reverse surface from the first surface or is located on a side opposite from the first surface,
• the plurality of elements are mounted on each of the first surface and the second surface,
• the second surface faces the power supply, and
• the temperature sensor is mounted on the second surface.