Power supply unit for aerosol generation device

A power supply unit for an aerosol generation device comprising:

• a power supply configured to supply power to a heater configured to heat an aerosol source;
• a receptacle configured to receive power for charging the power supply from a plug connected to an external power supply;
• a charger configured to control charging of the power supply by power received by the receptacle;
• a regulator connected between the charger and the controller and including an activation terminal;
• and
• a controller configured to control the charger,
• wherein the receptacle and the power supply are connected in parallel with the charger, and
• wherein the charger is configured to supply power from the receptacle and the power supply to the controller via the charger,
• the charger comprises an input terminal connected to the receptacle but not the heater,
• the regulator converts power supplied from the charger into power that causes the controller to function in response to an input of a high-level signal to the activation terminal,
• wherein a positive electrode side further includes a capacitor connected to the activation terminal and an output side of the charger, and
• the regulator is a low-drop-out (LDO) regulator.