| 主权项 |
1. A voltage generator of a nonvolatile memory device, comprising:
an oscillator configured to generate clocks; a pump circuit configured to generate a pump output voltage in response to the clocks; a first regulator configured to compare a first division voltage, divided from the pump output voltage, with a first reference voltage in response to a pass regulator enable signal and generate a double enable signal for controlling the oscillator according to a result of the comparison; a second regulator comprising a comparator for comparing a second division voltage with a second reference voltage in response to a double regulator signal and generating a control signal according to a result of the comparison, a control circuit for supplying the pump output voltage to an output terminal in response to the control signal, and a voltage divider for generating the second division voltage by dividing voltage of the output terminal; and a third regulator configured to compare the second division voltage and a third reference voltage in response to a single regulator signal and generate a single enable signal for controlling the oscillator according to a result of the comparison, wherein the first regulator and the second regulator are activated when a double regulation operation is performed and the third regulator is activated when a single regulation operation is performed. |
