Patent ID: 8350616

Claim:
A variable output charge pump circuit comprising: a first array comprising a plurality of charge pump units coupled in parallel, said first array further comprising a first array common input and a first array common output, wherein each charge pump unit of said plurality of charge pump units of said first array comprises a respective enable input, said enable input for allowing a current contribution from a respective said charge pump to be added or subtracted to said first array variable common output; a second array comprising a plurality of charge pump units coupled in parallel, said second array further comprising a second array common input and a second array common output; and a clock divider operable to provide a plurality of selectable frequencies, said clock divider comprising a primary frequency input, a first selectable frequency output coupled to said first array common input, wherein said charge pump units of said first array are configured to switch at said first selectable frequency derived from said clock divider, and a second selectable frequency output coupled to said second array common input, wherein said charge pump units of said second array are configured to switch at said second selectable frequency derived from said clock divider.