Patent ID: 8120390

Claim:
A voltage regulator circuit operable in a direct output mode and a control mode, the regulator circuit comprising: an operational amplifier configured to generate a first voltage on a first output node based on a voltage difference between a first input node and a second input node, wherein the first input node is connected to a voltage reference; a bias generator configured to generate at least one bias voltage and couple the at least one bias voltage to the operational amplifier, wherein the bias generator includes a first resistor for determining the at least one bias voltage; a follower gain stage configured to receive the first voltage and generate a second voltage on a second output node that follows the first voltage; and a feedback circuit disposed between the second output node and the second input node, wherein the follower gain stage comprises a compensation network configured to introduce a zero in a frequency response associated with the first voltage, wherein the compensation network includes a second resistor composed of material matching the first resistor.