Patent ID: 8436654

Claim:
A level converter circuit for converting an input signal that is a digital signal having a first signal level into an output signal having a second signal level higher than the first signal level, the level converter circuit comprising: an amplifier circuit that amplifies the input signal and outputs an amplified output signal; a current generator circuit that generates a control current corresponding to an operating current flowing through the amplifier circuit when the signal level of the input signal changes; and a current detector circuit that detects the control current generated by the current generator circuit, and controls the operating current of the amplifier circuit to correspond to the detected control current, wherein the current generator circuit comprises first and second n-channel MOS transistors that are inserted between the current detector circuit and the ground, and connected in series, and wherein the first n-channel MOS transistor operates in response to the input signal, and the second n-channel MOS transistor operates in response to an inverted signal of the input signal.