Texas Instruments

UC3861DWG4  

AC DC Converters, Offline Switches

UC3861DWG4 Description

The UC3861DWG4 is a high-performance offline switch-mode power supply controller designed for a wide range of power management applications. Manufactured by Texas Instruments, this IC is part of the UC3861 family and is housed in a 16SOIC package. It is specifically tailored for surface mount applications, offering robust performance and reliability in various electronic systems.

UC3861DWG4 Features

The UC3861DWG4 is equipped with several advanced features that enhance its performance and versatility:

• Operating Temperature Range: The IC operates reliably within a temperature range of 0°C to 70°C (TA), making it suitable for both ambient and moderately elevated temperature environments.
• ECCN and Compliance: Classified under ECCN EAR99, the UC3861DWG4 complies with REACH and RoHS3 regulations, ensuring it meets stringent environmental and safety standards.
• Internal Switch: The presence of an internal switch simplifies the design process and reduces the need for external components, leading to a more compact and efficient power supply solution.
• Soft Start Control: This feature ensures a smooth startup process, minimizing inrush currents and protecting the power supply and connected devices from potential damage.
• Switching Frequency: The UC3861DWG4 supports a wide switching frequency range of 10kHz to 1MHz, allowing designers to optimize the power supply for efficiency and performance based on specific application requirements.
• Supply Voltage Range: The IC operates with a supply voltage (Vcc/Vdd) range of 10.5V to 22V, providing flexibility in power supply design and compatibility with various input voltage sources.
• Start-Up Voltage: A start-up voltage of 16.5V ensures reliable activation of the power supply under specified conditions.
• Packaging and Moisture Sensitivity: The UC3861DWG4 is packaged in a tube and has a Moisture Sensitivity Level (MSL) of 2 (1 Year), making it suitable for surface mount assembly processes while ensuring protection against moisture during storage and handling.

UC3861DWG4 Applications

The UC3861DWG4 is ideal for a variety of power management applications, including but not limited to:

• Consumer Electronics: Used in power supplies for devices such as televisions, monitors, and other consumer electronics where efficient power conversion and compact design are critical.
• Industrial Equipment: Suitable for industrial applications requiring reliable power management solutions, such as PLCs, motor controllers, and instrumentation.
• Telecommunications: Ideal for power supplies in telecommunication equipment, where high efficiency and low noise are essential for maintaining signal integrity.
• Medical Devices: Applicable in medical equipment where precise power control and compliance with stringent safety standards are paramount.

Conclusion of UC3861DWG4

The UC3861DWG4 from Texas Instruments stands out as a versatile and reliable offline switch-mode power supply controller. Its wide operating temperature range, internal switch, soft start feature, and broad switching frequency range make it an excellent choice for a variety of power management applications. The compliance with REACH and RoHS3 standards ensures it meets environmental and safety requirements, making it a responsible choice for modern electronics design. Whether used in consumer electronics, industrial equipment, telecommunications, or medical devices, the UC3861DWG4 offers a robust and efficient power supply solution that meets the demands of today's high-performance electronic systems.

UC3861DWG4 Documents

Download datasheets and manufacturer documentation for UC3861DWG4

Datasheets :

UC1861-68, UC2861-68, UC3861-68      

HTML Datasheet :

UC1861-68, UC2861-68, UC3861-68