| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal power supply voltage generation circuit with which a through current of a logic circuit supplied with an internal power supply voltage does not depend on a power supply voltage.SOLUTION: A reference voltage VREF is generated on the basis of a constant current of a current source 1 but independently of a power supply voltage VDD. On the basis of the reference voltage VREF, an internal power supply voltage DVDD is generated independently of the power supply voltage VDD by a source follower. A through current of a logic circuit 9 flows on the basis of the internal power supply voltage DVDD. The through current of the logic circuit 9 is therefore independent of the power supply voltage VDD. The internal power supply voltage DVDD is a minimum power supply voltage for the logic circuit 9 to operate on the basis of the specification. The through current of the logic circuit 9 is therefore small. |
