VOLTAGE GENERATOR FOR A NONVOLATILE MEMORY DEVICE, AND A METHOD OF OPERATING THE VOLTAGE GENERATOR

A voltage generator of a nonvolatile memory device includes a charging circuit, a current mirror circuit, a discharging circuit and an output circuit. The charging circuit amplifies a difference between a reference voltage and a feedback voltage to generate a first current. The current mirror circuit is connected to the charging circuit and generates a second current based on the first current. The discharging circuit is connected to the current mirror circuit to draw the second current, and discharges the output voltage to a target level by adjusting discharging amount of the second current based on a sensing voltage which reflects a change of the feedback voltage. The output circuit is connected to the current mirror circuit, and provides the output voltage based on the first current andthe second current to a first word-line connected to an output node. 非易失性存储器设备的电压生成器包括充电电路、电流镜电路、放电电路和输出电路。充电电路放大参考电压与反馈电压之间的差以生成第电流。电流镜电路连接到充电电路并且基于第电流生成第二电流。放电电路连接到电流镜电路以汲取第二电流，并且通过基于反映反馈电压的变化的读出电压调节第二电流的放电量来将输出电压放电到目标电平。输