Battery protection integrated circuit and circuit characteristic setting method

A battery protection IC has detection circuits to detect faults of an overcharge, an over-discharge, and an overcurrent of a secondary battery; a control circuit to protect the secondary battery, by controlling (dis)charging the secondary battery upon the fault; and a delay circuit to generate delay...

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Bibliographische Detailangaben
Hauptverfasser: Kawaguchi Norihito, Satake Yoshihiro, Kageyama Ryota, Tanaka Nobuhito, Koshimizu Koji, Yamauchi Tsutomu, Takeda Takashi, Yamaguchi Takeshi
Format: Patent
Sprache:eng
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Zusammenfassung:A battery protection IC has detection circuits to detect faults of an overcharge, an over-discharge, and an overcurrent of a secondary battery; a control circuit to protect the secondary battery, by controlling (dis)charging the secondary battery upon the fault; and a delay circuit to generate delay after the fault before the controlling. The IC includes a memory unit to store data for setting and adjusting a circuit characteristic of the IC; and a setting circuit to set and adjust the circuit characteristic, based on the data from the memory unit. The memory unit includes a pair of non-volatile memory cells to complementarily store one bit, and a latch circuit directly cross-coupled with the memory cells, for each bit of the data. The latch circuit statically outputs the data from the memory cells to the setting circuit when the IC is turned on.