Texas Instruments

UC3865N

UC3865N Description

The UC3865N is an offline switch IC designed for AC-DC conversion applications, manufactured by Texas Instruments. This device is housed in a 16-DIP package and is suitable for through-hole mounting, making it ideal for applications requiring robust and reliable power conversion solutions. The UC3865N operates within a temperature range of 0°C to 70°C, ensuring stable performance under various environmental conditions. It features an internal switch and offers a wide switching frequency range from 10kHz to 1MHz, providing flexibility in design and optimization for different power conversion needs.

UC3865N Features

• Operating Temperature: 0°C to 70°C, ensuring reliable performance in a wide range of ambient conditions.
• ECCN: EAR99, indicating compliance with export regulations.
• Mounting Type: Through-hole, suitable for applications requiring mechanical stability and ease of integration.
• Product Status: Obsolete, but still available for legacy systems and specific applications.
• Internal Switch: Yes, simplifying design and reducing the need for external components.
• Control Features: Soft start, which helps in reducing inrush current and improving system reliability.
• Frequency - Switching: 10kHz to 1MHz, offering flexibility in selecting the optimal switching frequency for different applications.
• REACH Status: REACH Unaffected, ensuring compliance with chemical safety regulations.
• Voltage - Start Up: 16.5V, ensuring reliable startup under specified voltage conditions.
• Mfr: Texas Instruments, a leading manufacturer known for high-quality and reliable semiconductor products.
• HTSUS: 8542.39.0001, facilitating accurate tariff classification for import purposes.
• Package: Tube, providing protection and ease of handling during assembly.
• Voltage - Supply (Vcc/Vdd): 10.5V to 22V, offering a wide input voltage range for versatile applications.
• RoHS Status: ROHS3 Compliant, ensuring environmental friendliness and compliance with global standards.
• Base Product Number: UC3865, part of a family of products with similar functionalities.
• Moisture Sensitivity Level (MSL): 1 (Unlimited), indicating no special handling requirements for moisture protection.

UC3865N Applications

The UC3865N is particularly well-suited for applications requiring efficient and reliable AC-DC conversion. Its wide operating voltage range and internal switch make it ideal for power supplies, chargers, and other power conversion systems. The soft start feature ensures smooth startup, reducing stress on the system and improving overall reliability. The wide switching frequency range allows designers to optimize the balance between efficiency and electromagnetic interference (EMI).

Conclusion of UC3865N

The UC3865N from Texas Instruments is a robust offline switch IC designed for efficient AC-DC conversion. Its wide operating temperature range, internal switch, and soft start feature make it a reliable choice for various power conversion applications. Despite being marked as obsolete, the UC3865N remains a viable option for legacy systems and specific applications where its unique features and performance benefits are required. Its compliance with REACH and RoHS3 standards ensures that it meets the highest environmental and safety regulations, making it a responsible choice for modern electronics design.