Integrated circuit with supply voltage detector

A method, comprising:

• providing a supply voltage to a supply voltage detector of an integrated circuit;
• generating, with the supply voltage detector, a first bias voltage based on the supply voltage;
• providing the first bias voltage to a comparator of the supply voltage detector;
• generating, with the comparator, a first supplemental current while the supply voltage is increasing;
• generating, with the comparator, an output voltage indicative of a state of the supply voltage based on the supply voltage and the bias voltage;
• and
• generating, with the integrated circuit, a local supply voltage lower than the supply voltage based on the output voltage.

An integrated circuit, comprising:

• a supply voltage detector including:
• a bias voltage generator configured to generate a first bias voltage based on a supply voltage;
• and
• a comparator coupled to the bias voltage generator and configured to receive the first bias voltage and the supply current and to generate an output voltage indicative of a state of the supply voltage based on the bias voltage, the comparator including a startup current booster configured to generate a first supplemental current in the comparator.