a linear regulator and methods of regulation are provided . in one implementation , a linear regulator is provided . the linear regulator can receive an input voltage , generate an internal bias voltage in response to the received input voltage . the linear regulator can determine if the input voltage meets one or more first criteria and second criteria , and adjust an output voltage based on the internal bias voltage if the input voltage meets the one or more first criteria . the linear regulator also can supply the input voltage directly to the load if the input voltage meets the one or more second criteria . in some implementations , the linear regulator can generate an internal bias voltage that is clamped within a desired operating range if the input voltage meets the one or more first criteria , and adjusts one or more electronic circuits using the internal bias voltage to provide the adjusted output voltage .