Samsung Electronics Co., Ltd.

Yi-do Koo

Chang-sik Yoo

Won-chan Kim

Kee-wook Jung

An output driver supplying constant output current regardless of output voltage changes. The output driver includes a current source for regulating changes in a voltage of an output terminal responsive to a reference signal, and an output current compensator that responds to the current source to supply constant current to the terminal. The current source includes a first MOS transistor having a drain coupled to the terminal and a gate to which the reference signal is input, and a second MOS transistor having a drain coupled to a source of the first MOS transistor, a gate to which data is input, and a source coupled to ground. The current source may be an open drain current source. The output current compensator includes a current compensator coupled to the terminal, and a sensing driver for sensing voltage changes of the terminal and driving the current compensator.

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Seoul, South Korea

Yi-do Koo