Programmable bandgap reference voltage

摘要

Embodiments may include a method, system and apparatus for providing a reference voltage supply. A series resistor is provided between a power supply and a bandgap circuit coupled to an amplifier. A shunt transistor circuit is operatively coupled to the series resistor. A programmable output voltage is provided based upon the shunt transistor circuit and a first value of the series resistor.

主权项

1. A method, comprising:
providing a series resistor between a power supply and a bandgap circuit coupled to an amplifier; providing a shunt transistor circuit operatively coupled to said series resistor; providing programmable output voltage based upon said shunt transistor circuit and a first value of said series resistor; and providing a variable resistor, wherein the value of at said variable resistor is adjustable for setting an under-voltage lockout threshold, wherein a circuit component is shut-down based upon a determination that said output voltage is below a predetermined threshold.