Patent ID: 9086714
Filing Date: 2015-07-21
Classification: G05F

Abstract:
1. A driver circuit for driving a pass device of a linear regulator, the driver circuit comprising a driver stage adapted to regulate a driver gate for connecting to a gate of the pass device, wherein the driver stage comprises a transistor diode having the driver gate; a feedback transistor having a source and a drain coupled to a source and a drain of the transistor diode; wherein a feedback voltage at a gate of the feedback transistor is regulated based on an output current of the pass device; and output current sensing means adapted to sense the output current of the pass device; wherein the output current sensing means comprise an output current mirror transistor having a gate connected to the driver gate; wherein the output current mirror transistor is adapted to form a current mirror with the pass device when the driver gate is connected to the gate of the pass device; and the sensed output current of the pass device corresponds to an output current of the output current mirror transistor.