SI8260DTR is designed to monitor the output of switching power supply and generate the power good signal to inform the system.There are three important functions of SI8260DTR: over-voltage protection, under-voltage protection and power good signal generating. Over-voltage protection(OVP) monitors 3.3V,5V and 12V to protect the power supply and system when one of these supply voltages exceeds the irnormal operation voltage. Under-voltageprotection(UVP) monitors 3.3V,5V and 12V to protect the power supply and system When power supply is ready or going to shutdown, power good signal generating notifies personal computers; it provides reliable power supply environment for system.