Application circuit of integrated circuit A4955

The utility model relates to the technical field of circuits. The application circuit of the integrated circuit A4955 is disclosed. The application circuit of the integrated circuit A4955 comprises the components of an application circuit of the integrated circuit A4955, the overcurrent protection circuit comprises an integrated circuit A4955, a controller, the integrated circuit A4955 and a delaycontrol circuit, the controller is connected with the integrated circuit A4955 through the delay control circuit, and the delay control circuit can prolong the overcurrent protection turn-off time ofthe integrated circuit A4955 under the control of the controller. According to the application circuit of the integrated circuit A4955 provided by the utility model, the overcurrent protection turn-off time of the integrated circuit A4955 is prolonged by 1-3 times by arranging the delay control circuit; the heating of the MOS transistor of the circuit in a fault protection state and the influenceof short-circuit impact cu