Abstract: A voltage generator includes a first trim unit and a second trim unit. The first trim unit generates a first voltage variable depending on temperature variation and a second voltage invariable irrespective of the temperature variation based on a power supply voltage, and performs a first trim operation by changing a level of the second voltage. The level of the second voltage at a first temperature becomes substantially the same as a level of the first voltage at the first temperature based on the first trim operation. The second trim unit generates an output voltage based on the power supply voltage, the first and second voltages, a reference voltage and a feedback voltage, and performs a second trim operation by adjusting variation of the output voltage depending on the temperature variation based on a result of the first trim operation.

Abstract: A voltage generator and a memory device including the voltage generator are provided. The voltage generator includes a clock generation unit which outputs a plurality of clock signals; a charge pumping unit which comprises a plurality of charge pumps, wherein one from among the plurality of charge pumps is enabled in response to an operation mode signal, and performs a charge pumping operation according to the plurality of clock signals to output a first voltage; and a regulator which generates a standby operation voltage from the first voltage.

Abstract: A voltage generator and a memory device including the voltage generator are provided. The voltage generator includes a clock generation unit which outputs a plurality of clock signals; a charge pumping unit which comprises a plurality of charge pumps, wherein one from among the plurality of charge pumps is enabled in response to an operation mode signal, and performs a charge pumping operation according to the plurality of clock signals to output a first voltage; and a regulator which generates a standby operation voltage from the first voltage.

Abstract: A boosting voltage control circuit includes a first charge pump coupled to an output node, and a second charge pump coupled to the output node, the second charge pump having an enable input to enable the second charge pump. The boosting voltage control circuit also includes a regulation circuit coupled to the output node, and a clock generator coupled to the regulation circuit, the first charge pump, and the second charge pump.

Abstract: Disclosed is a boosting voltage control circuit. A reference voltage for comparing the boosting voltage is generated using a trim bit. Further, the dropped boosting voltage and the reference voltage are compared. Therefore, the boosted voltage is kept to be a given level in a normal operation of the device as well as its read operation.

Abstract: Disclosed is a boosting voltage control circuit. A reference voltage for comparing the boosting voltage is generated using a trim bit. Further, the dropped boosting voltage and the reference voltage are compared. Therefore, the boosted voltage is kept to be a given level in a normal operation of the device as well as its read operation.

Abstract: A pumping voltage regulation circuit adjusts a pumping voltage to maintain a preset voltage level regardless of the variation of a supply voltage. The pumping voltage regulation circuit includes a clock adjusting unit for producing a second clock signal according to a combination of a first clock signal and a first control signal or that of the first clock signal and a second control signal, a pumping voltage generating unit for producing a pumping voltage in response to the second clock signal outputted from the clock adjusting unit, a diode chain for dividing the pumping voltage and a sense amplifier for outputting the second control signal by comparing an output voltage of the diode chain with a reference voltage.

Abstract: A pumping voltage regulation circuit adjusts a pumping voltage to maintain a preset voltage level regardless of the variation of a supply voltage. The pumping voltage regulation circuit includes a clock adjusting unit for producing a second clock signal according to a combination of a first clock signal and a first control signal or that of the first clock signal and a second control signal, a pumping voltage generating unit for producing a pumping voltage in response to the second clock signal outputted from the clock adjusting unit, a diode chain for dividing the pumping voltage and a sense amplifier for outputting the second control signal by comparing an output voltage of the diode chain with a reference voltage.