Texas Instruments

UCC3813N-2

UCC3813N-2 Description

The UCC3813N-2 is an offline switch IC designed for AC-DC converters and offline switch applications. Manufactured by Texas Instruments, this device is notable for its versatility and robust performance. It supports multiple topologies, including Boost, Buck, Flyback, and Forward, making it suitable for a wide range of power conversion designs. The UCC3813N-2 features an internal switch and offers frequency control, ensuring precise regulation of the switching frequency up to 1MHz. This high-frequency capability allows for the use of smaller inductors and capacitors, reducing the overall size and cost of the power supply.

UCC3813N-2 Features

• Frequency Control: The UCC3813N-2 provides frequency control, enabling precise regulation of the switching frequency up to 1MHz. This high-frequency operation allows for the use of smaller passive components, which can significantly reduce the size and cost of the power supply.
• Internal Switch: The device includes an internal switch, simplifying the design and reducing the number of external components required.
• Wide Input Voltage Range: The UCC3813N-2 operates with a supply voltage range of 8.3V to 12V, ensuring reliable performance across a variety of input conditions.
• High Duty Cycle: With a duty cycle of up to 99%, the UCC3813N-2 can achieve high efficiency in power conversion, making it ideal for applications where energy efficiency is critical.
• Through Hole Mounting: The through-hole mounting type ensures robust mechanical stability and ease of integration into various circuit boards.
• Compliance and Status: The UCC3813N-2 is REACH unaffected and RoHS3 compliant, meeting environmental and regulatory standards. It is also classified under HTSUS code 8542.39.0001.
• Moisture Sensitivity Level (MSL): With an MSL of 1 (unlimited), the device is suitable for a wide range of environmental conditions without the need for special handling.

UCC3813N-2 Applications

The UCC3813N-2 is ideal for a variety of applications due to its versatile design and high performance. Some specific use cases include:

• Consumer Electronics: The high-frequency operation and internal switch make it suitable for compact power supplies in devices such as smartphones, tablets, and laptops.
• Industrial Applications: The robust design and wide input voltage range make it ideal for industrial power supplies and motor control applications.
• Medical Devices: The REACH unaffected and RoHS3 compliant status ensure that it meets the stringent regulatory requirements for medical equipment.
• Telecommunications: The UCC3813N-2 can be used in power supplies for base stations and other telecommunication equipment, where high efficiency and reliability are crucial.

Conclusion of UCC3813N-2

The UCC3813N-2 is a versatile and high-performance offline switch IC that offers significant advantages over similar models. Its ability to support multiple topologies, combined with its internal switch and high-frequency operation, makes it an excellent choice for a wide range of power conversion applications. The device's compliance with environmental and regulatory standards further enhances its appeal. While the UCC3813N-2 is now obsolete, it remains a testament to Texas Instruments' commitment to innovation and quality in power management solutions.