STMicroelectronics

VIPER35LE

VIPER35LE Description

The VIPER35LE is an obsolete offline switcher IC designed for flyback topology applications, manufactured by STMicroelectronics. This through-hole mounted device is housed in a tube package and features a breakdown voltage of 800V, making it suitable for high-voltage applications. The VIPER35LE operates within a supply voltage range of 8.5V to 23.5V and can deliver up to 22 watts of power. It includes an internal switch with a switching frequency of 136kHz, ensuring efficient power conversion. The device is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. With a moisture sensitivity level (MSL) of 1 (unlimited), the VIPER35LE is highly reliable in various environmental conditions. It also offers comprehensive fault protection, including current limiting, over-temperature, over-voltage, and short-circuit protection, ensuring robust performance and safety.

VIPER35LE Features

• High Breakdown Voltage: The VIPER35LE boasts a breakdown voltage of 800V, making it ideal for applications requiring high voltage handling capabilities.
• Efficient Power Delivery: Capable of delivering up to 22 watts of power, the VIPER35LE is designed to meet the demands of high-power applications efficiently.
• Internal Switch with High Switching Frequency: The device features an internal switch operating at a frequency of 136kHz, which enhances power conversion efficiency and reduces the size of external components.
• Wide Supply Voltage Range: The VIPER35LE operates within a supply voltage range of 8.5V to 23.5V, providing flexibility in power supply design.
• Comprehensive Fault Protection: Equipped with current limiting, over-temperature, over-voltage, and short-circuit protection, the VIPER35LE ensures safe and reliable operation under various conditions.
• Environmental Compliance: The device is REACH unaffected and RoHS3 compliant, ensuring it meets the highest environmental and safety standards.
• Reliability in Diverse Conditions: With an MSL rating of 1 (unlimited), the VIPER35LE is highly reliable and suitable for use in a wide range of environmental conditions.

VIPER35LE Applications

The VIPER35LE is well-suited for a variety of applications due to its high voltage handling capabilities, efficient power delivery, and robust protection features. Some specific use cases include:

• Power Supplies: Ideal for offline power supplies in consumer electronics, industrial equipment, and medical devices.
• Adapters and Chargers: Suitable for high-voltage adapters and chargers requiring efficient power conversion and reliable operation.
• Lighting Applications: Can be used in LED lighting systems where high voltage and efficient power management are critical.
• Telecommunications: Applicable in telecom equipment where high reliability and environmental compliance are essential.

Conclusion of VIPER35LE

The VIPER35LE, despite being obsolete, remains a reliable and efficient choice for applications requiring high voltage handling and robust power management. Its comprehensive feature set, including high breakdown voltage, efficient power delivery, and comprehensive fault protection, makes it a standout option in its category. The device's environmental compliance and reliability in diverse conditions further enhance its appeal. While newer alternatives may be available, the VIPER35LE continues to offer significant value for engineers and designers seeking a proven solution for their power management needs.