Variable voltage source for a flash device operating from a power-supply-in -package (PSIP)

A device, comprising:

• an inductor having a first terminal to receive a voltage and a second terminal coupled to an output of the device;
• a voltage-divider coupled between the output of the device and a ground terminal;
• a tap circuit having inputs coupled to tap points of the voltage-divider;
• a control block coupled to receive data values and provide a signal to the tap circuit to select a tap point;
• a regulation circuit to receive a voltage reference and a tap voltage from the tap point;
• and
• a first transistor having a control terminal coupled to the regulation circuit and current carrying terminals coupled between the second terminal of the inductor and the ground terminal.

A device that includes an inductor, a transistor and a voltage-divider having tap points, comprising:

• a first pin coupled to a first terminal of the inductor and further coupled to receive a voltage potential;
• a second pin coupled to a second terminal of the inductor to provide an output current, and further coupled to a first end of the voltage-divider;
• a reference pin coupled to a second end of the voltage-divider;
• and
• a plurality of pins to receive data values used to select a tap voltage from one of the tap points to compare with a voltage reference to control the transistor switching the output current from the second pin to the reference pin.

A method, comprising:

• providing a voltage potential at an output;
• using data values to select a tap point on a voltage-divider to feedback a portion of the voltage potential to compare against a voltage reference;
• and
• changing the voltage potential until the comparison shows the portion of the voltage potential substantially equal to the voltage reference.