Patent ID: 7728563

Claim:
A voltage regulator comprising: first, second, third, fourth, and fifth transistors, each transistor including first and second terminals spaced apart with a channel therebetween and including a gate for controlling current in said channel, said gate and first terminal of the first transistor being coupled to a first voltage terminal, said second terminal of the first transistor being coupled to the second terminal of the second transistor and the gate of the third transistor, and said gate and said first terminal of the fifth transistor being coupled to the first terminal of the third transistor, such that the second transistor is configured to charge back a pumped output into said gate of the third transistor; wherein said second terminal of the third transistor being coupled to the first terminal of the fourth transistor, and said second terminal of the fourth transistor being coupled to a ground terminal, such that the third transistor and the fourth transistor are connected in series between the output terminal and ground; an inductor including a first terminal coupled to a second voltage terminal and including a second terminal coupled to the first terminal of the third transistor and coupled to the gate and first terminal of the fifth transistor; a capacitor including a first terminal coupled to the gate and first terminal of the second transistor, to the second terminal of the fifth transistor and to the output terminal; and a control circuit including an input coupled to the output terminal and including an output coupled to the gate of the fourth transistor.