Patent ID: 6529082
Filing Date: 2003-03-04
Classification: H03L

Abstract:
A charge pump circuit comprising:a first current source having a first input node coupled to a first source voltage and a first output node, a first electronic switch controlled by a first control signal, said first electronic switch having a first switch terminal coupled to said first output node and a second switch terminal coupled to a first charge pump node; a second current source having a second input node coupled to said first source voltage and a second output node; a second electronic switch controlled by a second control signal, said second electronic switch having a third switch terminal coupled to said second output node and a fourth switch terminal coupled to a second charge pump node; and a first bi-directional electronic switch having a fifth switch terminal coupled to said first output node and a sixth switch terminal coupled to said second output node, said first bi-directional electronic switch gated ON and OFF in response to a third control signal, wherein said first and said second charge pump nodes selectively receive a first current level and a second current level in response to said first control signal, said second control signal and said third control signal.