Circuit for charging supplemental battery in portable...

Details Circuit for charging supplemental battery in portable... Circuit for charging supplemental battery in portable...

2005-03-08

2005-03-08

Tso, Edward H. (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

06864664

ABSTRACT:
A charge pump IC and LDO are provided between the main power supply of a portable electronic device and a supplemental battery to control charge current and voltage to the supplemental battery using a small internally-packaged circuit.

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