Patent Number: 7,612,539

Title: Battery charger circuits using constant current/constant voltage mode using maintenance offset currents and methods of operating the same

Abstract: Battery charging circuits can change from charging a battery in a constant current mode using an amplifier circuit output to control a voltage controlled current source to provide substantially constant current to the battery to charging the battery in a constant voltage mode using the amplifier circuit output to control the voltage controlled current source to provide a varied current to the battery. Related methods are disclosed.

Inventors: Woo; Lee Won (Gyeonggi-do, KR), Sub; Choi Jin (Gyeonggi-do, KR)

Assignee: Samsung Electronics Co., Ltd.

International Classification: H02J 7/04 (20060101)

Expiration Date: 1/03/02017