Techniques in hybrid regulators of high power supply rejection ratio and conversion efficiency

A circuit, comprising:

• a first set of digital devices that is to provide a first portion of current to a load, the first set of digital devices are to be controlled by a digital regulator;
• and
• a second set of analog devices that is to provide a second portion of current to the load;
• wherein the second set of analog devices is set to reduce noise in the first portion of current to the load and the system is coupled to the load to provide the first portion of current and second portion of current to the load.

An apparatus of a digital regulator, comprising:

• at least two comparators to compare a gate voltage of an analog LDO to a low reference and a high reference;
• and
• a digital controller to generate a control signal to control a shift register of a digital LDO, based on respective comparisons by the at least two comparators;
• and
• wherein respective outputs of the at least two comparators are coupled to corresponding inputs of the digital controller to determine a value of the control signal based on the respective comparisons by the at least two comparators.