Electronic circuit for protecting element from over-voltage and electronic device including the same

An electronic circuit comprising:

• an output generator configured to output an output signal to an output terminal;
• and
• an over-voltage detector configured to output an over-voltage detection signal of a first logic value, such that elements included in the output generator are turned off, in response to an amplitude of a voltage of the output terminal being greater than an allowable amplitude,
• wherein the elements, which have been turned off in response to the first logic value of the over-voltage detection signal, remain turned off, at least until a reference time elapses after the first logic value of the over-voltage detection signal changes to a second logic value of the over-voltage detection signal, and
• wherein, in response to the first logic value of the over-voltage detection signal changing to the second logic value of the over-voltage detection signal and then the over-voltage detector outputting the over-voltage detection signal of the first logic value again before the reference time elapses, the elements, which have been turned off in response to the first logic value of the over-voltage detection signal, continue to remain turned off.

An electronic circuit comprising:

• an output generator configured to output an output signal to an output terminal;
• and
• an over-voltage detector configured to provide an over-voltage detection signal to the output generator, such that active elements included in the output generator are turned off,
• wherein the over-voltage detector comprises,
• resistive elements configured to divide a voltage of the output terminal to output a divided voltage;
• a first comparator configured to compare the divided voltage with a first reference voltage, to output a first comparison result associated with whether the voltage of the output terminal is higher than a positive allowable voltage;
• a second comparator configured to compare the divided voltage with a second reference voltage lower than the first reference voltage, to output a second comparison result associated with whether the voltage of the output terminal is lower than a negative allowable voltage;
• and
• a logic circuit configured to generate the over-voltage detection signal based on the first comparison result and the second comparison result.