POWER SUPPLY UNIT FOR AEROSOL INHALER AND AEROSOL INHALER

A power supply unit for an aerosol inhaler that causes an aerosol generated from an aerosol source to pass through a flavor source to add a flavor component of the flavor source to the aerosol includes a power supply configured to be dischargeable to a first load configured to heat the aerosol source and a processing device. The processing device is configured to control discharging from the power supply to the first load in response to a signal from a sensor indicating an aerosol generation request, and the processing device is configured to control the discharging such that a unit flavor amount converges to a target amount based on an output of an element configured to output information on a temperature of the flavor source, the unit flavor amount being an amount of a flavor component added to an aerosol generated for each aerosol generation request.