Charging integrated circuit for charging battery device and electronic device including the same

A charging integrated circuit (IC) for charging a first battery and a second battery, the charging IC comprising:

• a switching charger configured to charge the first battery and the second battery using a first charge input received from a first input terminal in a normal charging mode;
• a direct charger configured to charge the first battery and the second battery using a second charge input received from a second input terminal in a quick charging mode;
• and
• a connection circuit configured to connect the first battery and the second battery in series in the normal charging mode, and to connect the first battery and the second battery in parallel in the quick charging mode.

An electronic device comprising:

• a charging integrated circuit (IC) configured to charge a battery device that includes a first battery and a second battery;
• and
• a system load configured to receive power from the charging IC,
• wherein the charging IC comprises:
• a connection circuit configured to connect the first battery and the second battery to each other in series or in parallel;
• a first charger connected to the system load and configured to charge the first battery and the second battery connected to each other in parallel in a first charging mode through a first charging path;
• and
• a second charger configured to charge the first battery and the second battery connected to each other in series in a second charging mode through a second charging path.