Patent ID: 7973526

Claim:
A reference voltage generator comprising: a reference voltage generation unit including a resistor connected between a power supply voltage and an output node, for dividing the power voltage and generating a reference voltage to the output node thereof; a voltage detector receiving a feedback of the reference voltage and detecting a level of the reference voltage; and a bypass circuit bypassing the resistor in response to an output signal of the voltage detector, wherein the bypass circuit comprises a MOSFET transistor connected in parallel to the resistor, and a gate of the MOSFET transistor receives the output signal, wherein the voltage detector turns on the bypass circuit to bypass the resistor until the reference voltage is set up to a predetermined level, and turns off the bypass circuit after the reference voltage is set up to the predetermined level, wherein the voltage detector comprises: a voltage divider dividing the power supply voltage and outputting a divided voltage to an output node thereof; a pull-up unit connected between the power supply voltage and the output node of the voltage divider, and controlling a voltage level of the output node of the voltage divider in response to the fed back reference voltage; a first inverter inverting a signal of the output node of the voltage divider; and a second inverter inverting an output signal of the first inverter and generating an output signal of the voltage detector.