| 摘要 |
Provided is a battery state monitoring circuit including a control circuit that applies, to a gate of a signal output transistor provided at a terminal for transmitting an overcharge detection signal, a potential at which the signal output transistor is turned off at a voltage lower than a minimum circuit operating voltage. Accordingly, in a battery device that uses the cascade-connected battery state monitoring circuits, charge is inhibited securely even at a power supply voltage lower than the minimum circuit operating voltage.
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