Current mode output driver

A method of controlling an output current from a current mode output driver, the current mode output driver including a gate voltage control circuit which changes a level of a gate voltage according to a value of a current control signal and outputs the changed result;

• a bias circuit which outputs the gate voltage as a first enable signal in an active mode and outputs a ground voltage as a second enable signal in a standby mode;
• and a driver circuit which drives a predetermined output current in response to the first enable signal and stops its operation in response to the second enable signal, the method comprising:
• increasing the level of the gate voltage and outputting the increased result when the value of the current control signal increases in the active mode, at the gate voltage control circuit;
• increasing an output current driven by the driver circuit due to decrease of a turn-on resistance of the driver circuit according to an increase of the level of the gate voltage;
• decreasing the level of the gate voltage and outputting the decreased result when the value of the current control signal decreases in the active mode, at the gate voltage control circuit;
• and
• decreasing the output current driven by the driver circuit due to an increase of the turn-on resistance of the driver circuit according to decrease of the level of the gate voltage.