Patent ID: 8497667

Claim:
A voltage regulator comprising: reference circuitry including: a voltage divider including a first terminal coupled to a supply voltage terminal, including a second terminal coupled to a ground terminal, and including a third terminal providing a voltage between the supply voltage and ground; and a first transistor of a first type, the first transistor having a current bias and including first and second terminals spaced apart with a channel therebetween, and including a gate for controlling current in said channel, said first terminal being coupled to the first terminal of the voltage divider, said second terminal being coupled to the third terminal of the voltage divider, said gate being coupled to said second terminal; second circuitry coupled to a high voltage terminal and to said reference circuitry, the high voltage terminal being separate from the supply voltage, the second circuitry generating a signal to a first output terminal in response to the reference circuit and arranged to provide a second current proportional to the current bias; and an output stage coupled to the second circuitry, the output stage comprising: a first output transistor of the first type having a current that is a mirror of the current bias, the first output transistor being coupled to an output node of the voltage regulator; and a second output transistor having a gate coupled to a first output terminal of the second circuitry, the output being regulated by the first output transistor, wherein the second output transistor is coupled between the high voltage terminal and the output node.