Regulator providing shared current from multiple input supplies

A method, comprising:

• receiving a first supply voltage at a first portion of a voltage regulator, the voltage regulator configured to provide an output current drawn by a load;
• receiving a second supply voltage at a second portion of the voltage regulator, the second supply voltage being received from a different input supply than the first supply voltage;
• prior to the output current drawn by the load meeting a current sharing point, providing the output current from only the first supply voltage;
• and
• responsive to the output current drawn by the load meeting the current sharing point, initiating, via a current control circuit of the voltage regulator, current sharing between the first supply voltage and the second supply voltage of the voltage regulator, wherein the output current is provided by both the first supply voltage and the second supply voltage.

An apparatus, comprising:

• a number of components of a memory system;
• and
• a controller of the memory system coupled to the number of components and comprising regulator circuitry configured to provide power to various portions of the memory system;
• wherein the regulator circuitry comprises:
• a first portion including a regulator having a first input power supply associated with a first power domain;
• and
• a second portion comprising a pass transistor having a first source/drain coupled to a second input power supply associated with a different power domain, the second input power supply being a different input supply than the first input power supply;
• and
• wherein the regulator circuitry is configured to:
• provide load current from the first input power supply until the load current meets a current sharing point;
• and
• responsive to the load current meeting the current sharing point, split the load current between the first input power supply and the second input power supply.