| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device for vehicle, which can supply power in an appropriate power output sequence even if a vehicle has two or more power supply terminals.SOLUTION: A reference voltage generation circuit 11 generates a reference voltage from an IG signal preliminarily given prior to power supply to a power supply means A1, a comparator 15 compares a divided voltage by the supplied voltage of the power supply means A1 with the reference voltage of the reference voltage generation circuit 11, and a power supply means A2 starts power supply from an output terminal 3f based on the comparison result of the comparator 15. In this case, the comparator 15 can output an accurate comparison result without error since the reference voltage is preliminarily given thereto. |
