Texas Instruments

UCC3889N  

AC DC Converters, Offline Switches

UCC3889N Description

The UCC3889N is a flyback power management IC designed by Texas Instruments, tailored for offline switch applications. This IC is housed in an 8-DIP package and is suitable for through-hole mounting. It operates within a temperature range of 0°C to 70°C (TA) and is classified under the ECCN code EAR99. The UCC3889N is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It features a startup voltage of 8.4V and a supply voltage range of 6.3V to 9.3V. The IC does not have an internal switch but offers short-circuit fault protection. Despite being marked as obsolete, the UCC3889N remains a reliable choice for specific applications due to its robust design and performance.

UCC3889N Features

The UCC3889N offers several key features that make it stand out in its category:

• Flyback Topology: This topology is ideal for applications requiring high efficiency and a compact design. The flyback converter allows for a simple and cost-effective solution for power conversion.
• Through-Hole Mounting: The through-hole mounting type ensures mechanical stability and reliability, making it suitable for applications where surface-mount components may not be ideal.
• Wide Operating Temperature Range: The 0°C to 70°C operating temperature range makes the UCC3889N suitable for a variety of environments, from typical room temperatures to moderately elevated temperatures.
• Short-Circuit Protection: The built-in short-circuit protection feature enhances the reliability and safety of the power supply, safeguarding against potential damage from overcurrent conditions.
• Compliance and Safety: The REACH unaffected and RoHS3 compliant status ensures that the UCC3889N adheres to stringent environmental and safety regulations, making it suitable for global markets.
• Startup and Supply Voltage: The 8.4V startup voltage and 6.3V to 9.3V supply voltage range provide flexibility in power supply design, ensuring stable operation across a variety of input conditions.

UCC3889N Applications

The UCC3889N is well-suited for a range of applications due to its robust design and versatile features:

• Consumer Electronics: Ideal for low-power consumer electronics where a compact and efficient power supply is required. The flyback topology ensures high efficiency and a simple design.
• Industrial Applications: Suitable for industrial equipment that operates within the specified temperature range and requires reliable power conversion.
• Power Adapters: The UCC3889N can be used in power adapters for various devices, providing a stable and efficient power supply solution.
• Lighting Systems: In applications such as LED lighting, the UCC3889N can help in designing efficient power supplies that meet the specific requirements of lighting systems.

Conclusion of UCC3889N

The UCC3889N by Texas Instruments is a versatile and reliable flyback power management IC, offering a range of features that make it suitable for various applications. Despite being marked as obsolete, its robust design, compliance with environmental and safety standards, and specific technical attributes make it a valuable component for certain power supply designs. The UCC3889N's ability to provide efficient power conversion in a compact form factor, along with its short-circuit protection and wide operating temperature range, ensures it remains a reliable choice for engineers and designers in the electronics industry.

UCC3889N Documents

Download datasheets and manufacturer documentation for UCC3889N

Datasheets :

UCC1889/2889/3889      

PCN Obsolescence/ EOL :

Mult Dev EOL 10/Mar/2022       PDIP 16-Mar-2022      

HTML Datasheet :

UCC1889/2889/3889