Low-dropout regulation of output voltage using first buffer and second buffer

A method for low-dropout regulation of an output voltage, the method comprising:

• providing, based on the output voltage, a first current into a first output node of a first driving element of a first buffer;
• biasing, by first bias circuitry, the first current;
• providing, based on a voltage at the first output node, a second current into a second output node of a second driving element of a second buffer;
• biasing, by second bias circuitry, the second current, wherein the second output node is configured to be electrically coupled to a control node of a pass device and wherein the pass device further comprises a first node electrically coupled to a supply and a second node configured to generate the output voltage;
• generating a control signal based on a current at the pass device;
• and
• electrically coupling the first output node of the first driving element to the control node of the pass device based on the control signal.

A system comprising:

• a pass device comprising a control node, a first node electrically coupled to a supply, and a second node configured to generate an output voltage;
• and
• a circuit configured to perform low-dropout regulation of the output voltage of the pass device, the circuit comprising:
• a first buffer including a first driving element configured to provide a first current into a first output node based on the output voltage and first bias circuitry configured to bias the first current;
• a second buffer comprising a second driving element configured to provide a second current into a second output node based on a voltage at the first output node and second bias circuitry configured to bias the second current flow, wherein the second output node is configured to be electrically coupled to the control node of the pass device;
• controller circuitry configured to generate a control signal based on a current at the pass device;
• and
• switching circuitry configured to electrically couple the first output node to the control node of the pass device based on the control signal.