The ST4225 is a surface mount power inductor manufactured by Pulse Electronics. These inductors are designed for use in various power supply applications, providing efficient energy storage and filtering capabilities. The ST4225 series is known for its compact size, low DC resistance, and high current handling capabilities, making it suitable for modern electronic devices where space and efficiency are paramount.

Applications

• DC-DC Converters: Used in step-up (boost) and step-down (buck) converters to efficiently regulate voltage levels.
• Power Supplies: Employed in various power supply units (PSUs) for filtering and energy storage.
• Notebook Computers: Utilized within laptop power management circuits to regulate power to different components.
• Handheld Devices: Found in smartphones, tablets, and other portable devices for power conditioning and filtering.
• Point-of-Load (POL) Converters: Integrated into POL converters located near the load to provide localized power regulation.

Features

• Surface Mount Design: Allows for automated assembly and compact board layouts.
• Low DC Resistance (DCR): Minimizes power losses and improves overall efficiency.
• High Saturation Current: Enables the inductor to handle high current levels without significant inductance drop.
• Compact Size: Optimizes space utilization on PCBs, making it suitable for small form factor applications.
• Shielded Construction: Reduces electromagnetic interference (EMI).

Benefits

• Improved Efficiency: Low DCR and high saturation current contribute to efficient power conversion.
• Reduced EMI: Shielded construction minimizes electromagnetic interference, ensuring stable operation of surrounding components.
• Compact Design: Small form factor allows for integration into space-constrained applications.
• Reliable Performance: Designed for stable and consistent performance in demanding environments.
• Simplified Assembly: Surface mount design facilitates automated assembly processes, reducing manufacturing costs.

Additional Details

The ST4225 inductor is typically constructed with a ferrite core and features a shielded design to minimize EMI. Specific electrical characteristics, such as inductance value, saturation current, and DC resistance, vary depending on the specific part number within the ST4225 series. These inductors are designed to operate over a wide temperature range, making them suitable for various operating conditions. Detailed datasheets are available from Pulse Electronics, providing comprehensive electrical and mechanical specifications.