UC2855BDWTR

Overview

The UC2855BDWTR is a high-performance power factor correction (PFC) pre-regulator integrated circuit manufactured by Texas Instruments. It operates within a switching frequency range of 500 kHz and supports an operating temperature range from -40°C to +85°C. The device is housed in a 16-pin SOIC package with a width of 7.50 mm. It features a low operating supply current of 150 µA, contributing to efficient standby power consumption. The component is designed for surface mount installation and complies with RoHS standards.

Feature Summary

• Integrated average current mode control for precise power factor correction
• Low quiescent supply current for enhanced energy efficiency
• Built-in protection mechanisms against overvoltage and thermal stress

Applications

• Active power factor correction stages in AC-DC power supplies
• High-efficiency computer and server power systems
• Consumer electronics requiring compliant power input stages

Procurement Notes

Verify the specific suffix 'BDWTR' to confirm the tape-and-reel packaging format and industrial temperature grade. Ensure the order matches the exact manufacturer part number to avoid confusion with non-tray variants or different temperature ranges. Cross-reference the datasheet revision date to confirm compatibility with current design requirements.

Selection Notes

Select this component for designs requiring active PFC with average current mode control. It is suitable for applications needing a balance between performance and low standby power. Consider the SOIC-16 footprint constraints and the 500 kHz switching frequency when designing magnetic components and PCB layout.

Part Context

This part belongs to the UC2855B series of PFC controllers. It serves as a pre-regulator stage to improve the power factor of AC-DC converters. The device integrates essential control loops and protection features into a single compact package, simplifying the design of compliant power supplies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official Texas Instruments channels before implementation.