Patent ID: 7068024

Claim:
A voltage regulator for regulating a boost voltage generated by a boost circuit, the voltage regulator comprising: a regulated voltage input operable to receive a regulated voltage derived from the boost voltage; a reference voltage input operable to receive a constant reference voltage; an output node operable to provide a feedback signal to the boost circuit for controlling the generated boost voltage; at least one transistor coupled to the regulated voltage input, the reference voltage input, and the output node, and operable to produce the feedback signal based on a comparison of the regulated voltage to the reference voltage; and a variable current source coupled to the output node and having one or more performance characteristics, the variable current source operable to generate a variable current at the output node to mitigate the affect of one or more performance characteristics of the at least one transistor based on the comparison and the feedback signal such that the boost circuit generates the boost voltage to be substantially constant.