onsemi

FSDH321  

AC DC Converters, Offline Switches

FSDH321 Description

The FSDH321 is an offline switch flyback power management IC designed by onsemi, a leading manufacturer in the electronics industry. This device is part of the FPS™ series and is housed in a through-hole 8DIP package. It is specifically engineered for applications requiring isolated output and robust fault protection. The FSDH321 operates within a supply voltage range of 8V to 20V and features a breakdown voltage of 650V, ensuring reliable performance in high-voltage environments. With a switching frequency of 100kHz, this IC provides efficient power conversion and is capable of delivering up to 17 watts of power. The device also includes an internal switch, which simplifies circuit design and enhances overall system efficiency.

FSDH321 Features

• High Efficiency and Performance: The FSDH321 operates with a switching frequency of 100kHz, ensuring efficient power conversion and minimal energy loss. This high-frequency operation allows for the use of smaller, more compact transformers, reducing the overall size and weight of the power supply.
• Robust Fault Protection: The device includes comprehensive fault protection mechanisms such as current limiting, over load, over temperature, and over voltage protection. These features safeguard the IC and connected components from potential damage, ensuring reliable and long-lasting performance.
• Wide Input Voltage Range: With a supply voltage range of 8V to 20V, the FSDH321 is versatile and can be used in a variety of applications with different input voltage requirements.
• Isolated Output: The FSDH321 provides isolated output, which is crucial for applications requiring electrical isolation between the input and output stages. This feature enhances safety and reduces the risk of electrical shock.
• Internal Switch: The inclusion of an internal switch simplifies the design process and reduces the number of external components required, leading to a more compact and cost-effective solution.
• Compliance and Reliability: The FSDH321 is REACH unaffected and ROHS3 compliant, ensuring that it meets the highest environmental and safety standards. Additionally, it has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of manufacturing environments.

FSDH321 Applications

The FSDH321 is ideal for a variety of applications where isolated output and high efficiency are required. Some specific use cases include:

• Power Supplies: The FSDH321 is well-suited for designing power supplies for consumer electronics, industrial equipment, and medical devices. Its ability to provide isolated output ensures safety and reliability in these applications.
• Charging Solutions: The device can be used in charging solutions for various electronic devices, providing efficient power conversion and ensuring that the devices are charged quickly and safely.
• Telecommunications: In the telecommunications industry, the FSDH321 can be used to power various components, such as routers and switches, where isolated output and high efficiency are critical.
• Medical Equipment: For medical devices that require isolated power supplies to ensure patient safety, the FSDH321 is an excellent choice. Its robust fault protection mechanisms also provide an additional layer of safety.

Conclusion of FSDH321

The FSDH321 is a versatile and reliable offline switch flyback power management IC that offers a range of technical specifications and performance benefits. Its high efficiency, robust fault protection, and isolated output make it an ideal choice for a variety of applications, including power supplies, charging solutions, telecommunications, and medical equipment. While the product is now obsolete, its unique features and advantages over similar models make it a valuable component for existing designs and legacy systems.

FSDH321 Documents

Download datasheets and manufacturer documentation for FSDH321

PCN Assembly/Origin :

Multiple Device Assembly Test 16/Jul/2013      

Datasheets :

FSDH321, FSDL321      

PCN Packaging :

Mult Devices 24/Oct/2017      

PCN Obsolescence/ EOL :

Mult Dev EOL 30/Mar/2023      

HTML Datasheet :

FSDH321, FSDL321      

PCN Design/Specification :

Logo 17/Aug/2017       Passivation Material 07/Dec/2007      

Environmental Information :

onsemi RoHS       onsemi REACH       Material Declaration FSDH321