The SI4480DY is a surface-mount N-Channel MOSFET manufactured by ON Semiconductor (formerly Fairchild Semiconductor). It is designed for high-efficiency switching applications, offering low on-resistance and fast switching speeds. This device is commonly used in power management circuits, DC-DC converters, and motor control applications.

Applications

• DC-DC Converters
• Power Management Circuits
• Motor Control
• Load Switching
• Battery Management Systems

Features

• N-Channel MOSFET
• Low On-Resistance (RDS(on))
• Fast Switching Speed
• High Drain Current (ID)
• Avalanche Rated
• Surface Mount Package (SO-8)

Benefits

• High Efficiency: The low on-resistance minimizes power losses, resulting in higher efficiency in power conversion applications.
• Fast Switching: Reduces switching losses and allows for higher frequency operation, enabling smaller and more efficient designs.
• Compact Size: The SO-8 package allows for efficient use of board space.
• Reliable Performance: Avalanche rating provides robustness against voltage transients.
• Simplified Design: Easy to use in a variety of power management applications.

Additional Details

The SI4480DY has a drain-source voltage (VDS) rating of typically 30V. The continuous drain current (ID) is typically around 10A, but this can vary based on the specific application and operating conditions. The RDS(on) value is a key parameter, with typical values in the milliohm range, depending on the gate-source voltage (VGS). The device is designed to operate over a wide temperature range, typically from -55°C to +150°C. Proper thermal management is crucial for optimal performance, especially at high current levels. The SO-8 package offers good thermal dissipation characteristics when properly mounted on a PCB with adequate copper area. It's RoHS compliant, ensuring it meets environmental regulations. This MOSFET is suitable for applications where high efficiency and compact size are critical requirements.