| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage regulator having a phase compensation circuit capable of acquiring an accurate output voltage. <P>SOLUTION: A phase compensation circuit comprises: a first constant current circuit connected to the gate of an output transistor; a first transistor of which drain is connected to the gate of the output transistor; a second transistor having a drain being connected to the gate of the first transistor, a second constant current circuit, and a resistor, and a gate being connected to the resistor and a first capacitor; and the first capacitor having another side being connected to an output terminal. Thus, electric current can be prevented from flowing from the output terminal of a differential amplifier circuit to the drain of the first transistor and off-set voltage generated at an input transistor of the differential amplifier circuit is reduced. Thereby, an accurate output voltage can be acquired. <P>COPYRIGHT: (C)2012,JPO&INPIT |
