Voltage generation circuit, and write driver and semiconductor memory apparatus including the same
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United States of America Patent
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Aug 25, 2015
Grant Date -
Jun 12, 2014
app pub date -
Mar 18, 2013
filing date -
Dec 11, 2012
priority date (Note) -
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Abstract
A voltage generation circuit includes a charge unit and a discharge unit. The charge unit is configured for raising a level of a ramp voltage to a predetermined level in response to a control signal. The discharge unit is configured for lowering the level of the ramp voltage in response to the control signal. The discharge unit uses a constant current source to lower the level of the ramp voltage.
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