onsemi

FSQ321L

FSQ321L Description

The FSQ321L is a high-performance, surface-mount flyback converter IC designed for AC/DC power supply applications. Manufactured by onsemi, this component offers a range of advanced features, making it suitable for various electronic devices. With a power rating of 12W, this IC is designed to operate within a supply voltage range of 8V to 20V and offers a breakdown voltage of 650V. The FSQ321L is part of the FPS™ series and is packaged in a tube, making it easy to handle and integrate into various applications.

FSQ321L Features

• Flyback Topology: The FSQ321L employs a flyback topology, which is known for its simplicity and efficiency in power conversion.
• Surface Mount: The surface-mount design allows for easy integration into compact and space-constrained applications.
• Internal Switch: This IC features an internal switch, reducing the need for external components and simplifying the design.
• Sync Control: The FSQ321L includes sync control features, enabling synchronization with other converters for improved efficiency and performance.
• Fault Protection: It offers comprehensive fault protection, including current limiting, overload, over-temperature, and over-voltage protection, ensuring reliable operation.
• Switching Frequency: The IC operates at a switching frequency range of 55kHz to 67kHz, providing flexibility in design and performance.
• Output Isolation: The FSQ321L provides isolated output, ensuring safety and reliability in various applications.
• REACH Unaffected: This product is not affected by the Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH) regulation, ensuring compliance with environmental standards.

FSQ321L Applications

The FSQ321L is ideal for a variety of applications where efficient power conversion is required. Some specific use cases include:

• Telecommunications Equipment: Due to its high efficiency and reliability, the FSQ321L is suitable for powering telecommunications equipment, such as routers and switches.
• Industrial Control Systems: The robust fault protection and isolated output make it an excellent choice for industrial control systems, where reliability is crucial.
• Medical Devices: The FSQ321L can be used in medical devices that require a stable and reliable power supply, such as diagnostic equipment and monitoring systems.
• Consumer Electronics: This IC is also suitable for consumer electronics, such as home appliances and personal computing devices, where space is limited, and efficiency is desired.

Conclusion of FSQ321L

The FSQ321L is a versatile and reliable flyback converter IC from onsemi, offering a range of advanced features and benefits. Its flyback topology, internal switch, and comprehensive fault protection make it an excellent choice for various applications, including telecommunications, industrial control systems, medical devices, and consumer electronics. While the FSQ321L is currently marked as obsolete, its performance and features make it a valuable component for legacy systems and applications where high efficiency and reliability are paramount.