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STR-W6735

STR-W6735 Description

The STR-W6735 is an offline switch IC designed for flyback topology applications, manufactured by Sanken Electric USA Inc. This through-hole mounted device is housed in a TO220F-6L package and is suitable for a wide range of AC-DC converter applications. Despite being marked as obsolete, the STR-W6735 remains a robust choice for specific applications due to its comprehensive feature set and reliable performance.

STR-W6735 Features

• Topology and Power Handling: The STR-W6735 utilizes a flyback topology, making it ideal for applications requiring isolated output. It can handle up to 160 watts of power, ensuring it meets the demands of medium to high-power applications.
• Voltage and Frequency Specifications: The device operates within a wide supply voltage range of 9.7V to 35V and features a breakdown voltage of 500V. Its switching frequency is adjustable between 19kHz and 25kHz, allowing for flexibility in design and optimization of efficiency.
• Control and Protection Features: The STR-W6735 incorporates soft start functionality to prevent inrush currents during startup. It also includes comprehensive fault protection mechanisms such as current limiting, over-load protection, and over-voltage protection, ensuring reliable operation and safeguarding against potential damage.
• Startup Voltage: With a startup voltage of 18.2V, the device ensures stable operation even under varying input conditions.
• Compliance and Packaging: The STR-W6735 is RoHS compliant, adhering to environmental standards and ensuring it is suitable for use in a wide range of industries. It is packaged in bulk, making it convenient for large-scale production and inventory management.
• Moisture Sensitivity Level: The device has a moisture sensitivity level (MSL) of 1 (unlimited), indicating it can be stored and handled without special precautions, simplifying the manufacturing process.

STR-W6735 Applications

The STR-W6735 is well-suited for a variety of applications due to its robust design and comprehensive feature set. Some specific use cases include:

• Power Supplies: Ideal for designing power supplies for consumer electronics, industrial equipment, and medical devices where isolated output and high power handling are required.
• Adapters and Chargers: Suitable for creating efficient and reliable adapters and chargers for various electronic devices, ensuring stable power delivery and protection against electrical faults.
• Telecommunications: Can be used in telecom infrastructure to provide stable power to various components, ensuring uninterrupted operation and protection against voltage fluctuations.
• Lighting Systems: Applicable in LED lighting systems where high efficiency and reliable power conversion are crucial for long-term performance and energy savings.

Conclusion of STR-W6735

The STR-W6735, despite its obsolete status, remains a valuable component for specific applications due to its robust design, comprehensive protection features, and flexibility in operation. Its ability to handle up to 160 watts of power, combined with its wide voltage range and adjustable switching frequency, makes it a versatile choice for a variety of AC-DC converter applications. The inclusion of soft start and comprehensive fault protection ensures reliable operation, while its RoHS compliance and bulk packaging make it suitable for environmentally conscious and large-scale manufacturing processes. For applications requiring isolated output and high power handling, the STR-W6735 stands out as a reliable and efficient solution.