Charger and integrated circuit having first and second...

Details Charger and integrated circuit having first and second... Charger and integrated circuit having first and second...

2005-09-09

2009-06-30

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

Plural charging sources

C307S046000, C320S163000

Reexamination Certificate

active

07554298

ABSTRACT:
A charger of the present invention includes a charging transistor and a charging integrated circuit. The charging transistor is series-connected with a secondary battery to supply a charging current to the secondary battery. The charging integrated circuit is incorporated into a package having a higher heat releasability than that of the charging transistor. The charging integrated circuit controls the charging transistor and besides, supplies a charging current to the secondary battery. For this purpose, the charging integrated circuit includes a current source supplying this charging current. The charging current from the current source is supplied to the secondary battery together with the charging current from the charging transistor to charge the secondary battery.

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patent: 5422559 (1995-06-01), Hall et al.
patent: 5663629 (1997-09-01), Hinohara
patent: 5723970 (1998-03-01), Bell
patent: 5831416 (1998-11-01), Fisher
patent: 6288522 (2001-09-01), Odaohhara et al.
patent: 6956357 (2005-10-01), Nagai et al.
patent: 7012405 (2006-03-01), Nishida et al.
patent: 2001/0004198 (2001-06-01), Matsuyama
patent: 2006/0103355 (2006-05-01), Patino et al.
patent: 09-84276 (1997-03-01), None
patent: 2003-092843 (2003-03-01), None
Chinese Office Action dated Apr. 6, 2007 (with English translation).
Japanese Office Action dated Jun. 17, 2008 (with partial English translation).

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