Patent ID: 6097179
Filing Date: 2000-08-01
Classification: G05F,Y10S

Abstract:
A voltage regulation circuit, comprising:a regulated voltage node;a detect node;a supply circuit coupled between a first power supply and the detect node, the supply circuit coupling the detect node to the first power supply according to the potential of the regulated voltage node;a detector circuit coupled between the detect node and a second power supply, the detector circuit includinga reference circuit that generates a monitor voltage at a monitor node, the monitor voltage having a magnitude that varies as the operating temperature of the voltage regulation circuit varies, anda trigger circuit coupled to the reference circuit that activates a trigger signal when the monitor voltage exceeds a threshold level, the threshold level varying in response to operating temperature variations in a fashion that corresponds to the monitor voltage variations to temperature; anda shunt circuit coupled between the regulated voltage node and the first power supply node, the shunt circuit providing a low impedance path between regulated voltage node and the first power supply node when the trigger signal is activated.