POWER-UP CIRCUIT WITH TEMPERATURE COMPENSATION

A power-up circuit with temperature compensation including a first current source, a current amplifier and a temperature compensation circuit is disclosed. The first current source is coupled to a first system voltage, and configured to generate an internal operating current according to an internal operating voltage. The current amplifier is coupled to the first current source and the first system voltage, and configured to generate an amplified current and a reference voltage corresponding to the amplified current according to the internal operating voltage and a parameter, wherein the internal operating voltage and the reference voltage have positive temperature coefficients, and the internal operating current and the amplified current have negative temperature coefficients. The temperature compensation circuit is coupled to the current amplifier, and configured to generate an output voltage with temperature compensation according to the reference voltage.