| 摘要 |
According to a reference voltage generated by a reference voltage generating circuit, a level shift circuit generates a control voltage with its level shifted from the reference voltage by a threshold voltage of a difference detection transistor. According to this control voltage, the difference detection transistor operates in a source follower mode to adjust a charged voltage of a capacitance element according to a voltage level of an internal voltage line. A current is supplied from a current drive circuit to the internal voltage line according to the charged voltage. In this way, an internal voltage is generated having a constant voltage level over a wide temperature range with a small occupying area and a small current consumption.
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