초록 ▼

A voltage regulator with automatic accelerated aging circuit (200) includes a comparator (202), a switched voltage divider (204), and a current-to-voltage converter (224). The voltage regulator (200) is implemented in an integrated circuit and monitors a power supply voltage provided to the integrat

A voltage regulator with automatic accelerated aging circuit (200) includes a comparator (202), a switched voltage divider (204), and a current-to-voltage converter (224). The voltage regulator (200) is implemented in an integrated circuit and monitors a power supply voltage provided to the integrated circuit. When the power supply voltage is within a first normal voltage range, the voltage regulator (200) provides a normal internal supply voltage to the integrated circuit. When the power supply voltage is within a second higher voltage range, the voltage regulator (200) automatically provides a higher than normal internal power supply voltage to the circuits of an integrated circuit for causing accelerated aging of the integrated circuit during burn-in reliability testing.

대표청구항 ▼

[ What is claimed is:] [1.] A voltage regulator, comprising:a comparator having a first input terminal for receiving a first reference voltage, a second input terminal, and an output terminal for providing a control signal, wherein the first reference voltage is provided by a circuit which causes th

[ What is claimed is:] [1.] A voltage regulator, comprising:a comparator having a first input terminal for receiving a first reference voltage, a second input terminal, and an output terminal for providing a control signal, wherein the first reference voltage is provided by a circuit which causes the first reference voltage to be relatively constant;a voltage source controlled by a power supply voltage, and in response, providing a second reference voltage to the second input terminal of the comparator, wherein the voltage source causes the second reference voltage to vary as a function of the power supply voltage; anda current-to-voltage converter, comprising:a current mirror circuit having a first input terminal for receiving a reference current, a second input terminal for receiving the power supply voltage, and an output terminal;a first transistor having a first current electrode coupled to the output terminal of current mirror circuit, a control electrode coupled to the output terminal of the comparator, and a second current electrode for providing a first output voltage;a first resistor having a first terminal coupled to the first current electrode of the first transistor, and a second terminal;a second transistor having a first current electrode coupled to the second terminal of the first resistor, a control electrode coupled, via an inverter, to the output terminal of the comparator, and a second current electrode coupled to the second current electrode of the first transistor for providing a second output voltage; anda second resistor having a first terminal coupled to the first current electrode of the second transistor, and a second terminal coupled to a ground terminal, wherein the first output voltage is provided in response to the second reference voltage being lower than the first reference voltage and the second output voltage is provided in response to the second reference voltage being higher than the first reference voltage.