Patent ID: 7459953
Filing Date: 2008-12-02
Classification: H03K

Abstract:
1. A voltage adjusting circuit, comprising: a first switch element, having a control terminal coupled to a first control signal, a first terminal coupled to a first voltage source, and a second terminal coupled to a first node; a second switch element, having a control terminal coupled to a second control signal, a first terminal coupled to a second node, and a second terminal coupled to the first node, wherein the second node is an output terminal of the voltage adjusting circuit, for outputting an output voltage according to the first voltage source; a third switch element, having a control terminal coupled to the first node, a first terminal coupled to the second node, and a second terminal coupled to a third node; a fourth switch element, having a control terminal coupled to a third control signal, a first terminal coupled to a second voltage source, and a second terminal coupled to the third node; a fifth switch element, having a control terminal coupled to the second control signal, a first terminal coupled to the second node, and a second terminal coupled to the third node; and a sixth switch element, having a control terminal coupled to the third node, a first terminal coupled to the second node, and a second terminal coupled to the first voltage source.