UC2866N

AC DC Converters, Offline Switchers Overview

The UC2866N is a resonant-mode power supply controller manufactured by Texas Instruments. It supports full-bridge, half-bridge, push-pull, and resonant LLC topologies. The device operates with a frequency range of 50 kHz to 500 kHz and features a maximum duty cycle of 50%. It includes an error amplifier, green mode for light load efficiency, and soft start capabilities. The operating temperature range spans from -40°C to +85°C, and it utilizes voltage control methods.

AC DC Converters, Offline Switchers Feature Summary

• Supports multiple resonant topologies including full-bridge, half-bridge, push-pull, and resonant LLC
• Integrates green mode technology to enhance light load efficiency
• Includes built-in soft start functionality for controlled startup sequences

AC DC Converters, Offline Switchers Applications

• Resonant mode power supply designs
• High-efficiency AC-DC converters
• Industrial power systems requiring soft switching

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific package type and tape/reel or tube packaging options available from authorized distributors. Confirm RoHS compliance status and any recent process change notifications (PCN) issued by Texas Instruments prior to ordering. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring resonant switching to minimize switching losses. Consider the 500 kHz maximum frequency limit when designing magnetic components. Evaluate the need for external gate drive strength as the internal driver specifications may require verification against the target switch requirements.

AC DC Converters, Offline Switchers Part Context

The UC2866N belongs to the UC286x family of resonant-mode controllers from Texas Instruments. This series is designed for high-performance power conversion applications where efficiency at partial loads is critical. It shares functional similarities with other UC386x variants but offers specific feature sets tailored for resonant topologies.

AC DC Converters, Offline Switchers Replacement Considerations

UC2866NG4 is a verified lead-free variant of the UC2866N. Other UC286x family members may serve as functional alternatives depending on specific topology and frequency requirements.