| 摘要 |
Electrostatic discharge and electrical overstress protection circuit is disclosed to include a discharging circuit, a detection circuit and a controller. The controller is operable to sense and compare the output voltage from the detection circuit to a reference voltage. The controller, upon detection of a normal operating condition or an electrical overstress (EOS) situation, is operable to cause the discharging circuit to discharge any excess voltage from the voltage supply to the electrical ground at a safety voltage level. The controller, upon detection of an electrostatic discharge (ESD) event, is operable to cause the discharging circuit to discharge the excess voltage at a second voltage level that is less than the safety voltage level.
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