The BD7681FJ-GE2 is an AC/DC converter IC manufactured by Rohm Semiconductor. It's designed to provide efficient and reliable power conversion for a variety of applications, with a focus on minimizing standby power consumption and maximizing overall efficiency.

Applications

• Power supplies for home appliances
• Adapter for mobile devices
• Auxiliary power supplies in industrial equipment
• Standby power supplies
• LED lighting power supplies

Features

• Quasi-resonant operation for high efficiency
• Low standby power consumption
• Built-in soft start function
• Overcurrent protection (OCP)
• Overvoltage protection (OVP)
• Thermal shutdown protection (TSD)
• Frequency hopping function for reduced EMI
• Integrated burst mode operation

Benefits

• Reduced energy consumption and lower electricity bills
• Improved system reliability due to built-in protection features
• Simplified system design due to integrated functionality
• Minimized electromagnetic interference (EMI)
• Extended product lifespan

Additional Details

The BD7681FJ-GE2 utilizes a quasi-resonant control scheme to achieve high efficiency across a wide load range. This minimizes switching losses and reduces heat generation. The IC incorporates comprehensive protection features to safeguard against various fault conditions, ensuring safe and reliable operation. The frequency hopping function helps to reduce EMI, making it easier to meet regulatory requirements. The integrated burst mode operation further reduces standby power consumption, making it ideal for energy-efficient applications.