VARIABLE VOLTAGE GENERATION CIRCUIT AND MEMORY DEVICE INCLUDING THE SAME

摘要

A variable voltage generation circuit includes a first amplification circuit and a second amplification circuit. The first amplification circuit generates a first output voltage based on a reference voltage, a first feedback voltage, a temperature-varied voltage and a temperature-fixed voltage such that the first output voltage is varied in a first voltage range according to a variation of the operational temperature. The first amplification circuit generates the first feedback voltage based on the first output voltage. The second amplification circuit generates a second output voltage based on the first feedback voltage, a second feedback voltage, the temperature-varied voltage and the temperature-fixed voltage such that the second output voltage is varied in a second voltage range wider than the first voltage range according to the variation of the operational temperature. The second amplification circuit generates the second feedback voltage based on the second output voltage.

主权项

1. A variable voltage generation circuit comprising:
a first amplification circuit configured to generate a first output voltage based on a reference voltage, a first feedback voltage, a temperature-varied voltage that is varied depending on an operational temperature and a temperature-fixed voltage that is fixed regardless of the operational temperature, the first output voltage being varied in a first voltage range according to a variation of the operational temperature, and configured to generate the first feedback voltage based on the first output voltage; and a second amplification circuit configured to generate a second output voltage based on the first feedback voltage, a second feedback voltage, the temperature-varied voltage and the temperature-fixed voltage, the second output voltage being varied in a second voltage range wider than the first voltage range according to the variation of the operational temperature, and configured to generate the second feedback voltage based on the second output voltage.