Nonlinear current mirror for fast transient and low power regulator

A power supply comprising:

• a first transistor having a source coupled to an input voltage (Vin) node and a drain coupled to an output voltage (Vout) node;
• a second transistor having a source coupled to the Vin node and a drain coupled to a drain-to-source voltage (Vds) clamp circuit;
• a current limiter circuit;
• a third transistor having a source coupled to a signal output of the current limiter circuit;
• a fourth transistor having a source coupled to a reference potential node, wherein a drain of the second transistor and a drain of the third transistor are coupled to a drain of the fourth transistor, and wherein a gate of the second transistor is coupled to a gate of the first transistor and a gate of the third transistor;
• and
• wherein the drain-to-source voltage (Vds) clamp circuit comprises:
• a fifth transistor having a source coupled to the drain of the second transistor;
• and
• an amplifier having a positive input coupled to the drain of the first transistor, a negative input coupled to the drain of the second transistor, and an output coupled to a gate of the fifth transistor.