| 摘要 |
PROBLEM TO BE SOLVED: To provide a stable output voltage that does not vary even when the load is low.SOLUTION: The regulator includes control sections Mn1, Mn2, Mp3 and Mp4 for varying the mirror ratio of a current mirror circuit in response to the current value of load current from an output stage to the load. The control sections perform control where, when the current value of the load current is smaller than a predetermined threshold, an output transistor Mp1 as a mirror destination transistor in the current mirror circuit is operated in a saturation region by setting the mirror ratio of the current mirror circuit at a relatively small value. |
