Patent ID: 11860659
Assignee: SK HYNIX INC.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A low drop-out (LDO) linear regulator, comprising:
a pass transistor coupled between an input terminal and an output terminal;
an error amplifier suitable for amplifying and outputting a difference between a feedback voltage corresponding to an output voltage of the output terminal and a predetermined reference voltage;
a buffer including an input terminal which is coupled to an output node of the error amplifier and an output terminal which is coupled to a gate of the pass transistor;
a first compensation circuit suitable for driving an equivalent resistance of the output node of the error amplifier to be in inverse proportion to a load current; and
a second compensation circuit suitable for driving an equivalent resistance of an output node of the buffer to be in inverse proportion to the load current, wherein second compensation circuit includes a transistor which is coupled in parallel to a bias current source of the buffer so as to supply a current proportional to a square of the load current to the bias current source of the buffer.