UC2852D

Overview

The UC2852D is a bipolar conversion mode power factor correction (PFC) controller manufactured by Texas Instruments. It operates within a temperature range of -40°C to +85°C and utilizes an 8-pin SOIC package. The device features a switching frequency of 200 kHz and supports continuous conduction mode (CCM). Designed as a high-power-factor pre-regulator, it integrates controlled on-time boost PWM functionality to achieve power factors greater than 0.99 with minimal external components.

Feature Summary

• Bipolar conversion mode operation for enhanced performance
• Integrated controlled on-time boost PWM architecture
• High power factor capability exceeding 0.99
• Minimal external component requirement for implementation

Applications

• Power factor correction pre-regulators
• High-efficiency AC-DC power supplies
• Continuous conduction mode PFC systems

Procurement Notes

Verify the specific suffix 'D' corresponds to the 8-pin SOIC package and the industrial temperature range (-40°C to +85°C). Confirm that the ordering part number matches the exact package style and thermal rating required for your design, as other suffixes may indicate different packages or commercial temperature ranges. Cross-reference the manufacturer's official documentation to ensure compatibility with your system specifications.

Selection Notes

Select this component when designing a CCM PFC stage requiring a 200 kHz switching frequency and a bipolar conversion approach. It is suitable for applications demanding a power factor above 0.99 with reduced bill-of-materials complexity. Ensure the PCB layout accommodates the SOIC-8 footprint and that the operating environment stays within the specified -40°C to +85°C thermal limits.

Part Context

The UC2852D belongs to the UC2852 series of power factor correction controllers from Texas Instruments. This series is engineered for high-performance pre-regulation in AC-DC conversion systems. The 'D' suffix specifically identifies the surface-mount SOIC package variant, distinguishing it from through-hole options like the UC2852N while maintaining identical electrical characteristics and control logic.

Replacement Considerations

The UC2852N serves as a verified through-hole replacement option within the same family, offering identical electrical performance but in a PDIP-8 package. Verify pinout compatibility and thermal management requirements when substituting between package types.