US 2023/0409061 A1 · LOW DROPOUT REGULATOR

Abstract

A low dropout regulator is provided. The low dropout regulator includes a first gain-stage, a second gain-stage, an output setting stage, and a Miller circuit. The first gain-stage generates a signal at a first gain-stage terminal based on a signal at a second gain-stage signal. The second gain-stage receives the signal at the first gain-stage terminal and generates a signal at a sensing terminal. The output setting stage outputs a load current to an output terminal. The signal at the sensing terminal is changed with the load current. The Miller circuit is electrically connected to the first gain-stage, the second gain-stage, and the output setting stage. The Miller circuit provides a capacitance related to a dominant pole of the low dropout regulator. The capacitance is changed with the signal at the sensing terminal.

Claims20

Dependent claims

A low dropout regulator, comprising:

a first gain-stage, configured to generate a signal at a first gain-stage terminal based on a signal at a second gain-stage terminal;
a second gain-stage, electrically connected to the first gain-stage terminal, configured to receive the signal at the first gain-stage terminal and generate a signal at a sensing terminal;
an output setting stage, electrically connected to the first gain-stage terminal and the sensing terminal, configured to output a load current to an output terminal, wherein the signal at the sensing terminal is changed with the load current;
and
a Miller circuit, electrically connected to the first gain-stage, the second gain-stage, and the output setting stage, configured to provide a capacitance related to a dominant pole of the low dropout regulator, wherein the capacitance is changed with the signal at the sensing terminal.

2 more elements

Dependencies are inferred from the claim text.

Low dropout regulator

Life of this patent

Low dropout regulator

Life of this patent

Abstract

Claims20