UC3854AN

Overview

The UC3854AN is a high power factor preregulator integrated circuit manufactured by Texas Instruments. It operates in a through-hole PDIP-16 package and supports a switching frequency of 200 kHz. The device functions within a supply voltage range of 10 V to 20 V and is rated for an operating temperature range from 0 °C to +70 °C. Designed for average current mode control, it integrates essential features for power factor correction applications.

Feature Summary

• Implements average current mode control for precise input current shaping
• Integrates zero-power detection capability for enhanced efficiency at light loads
• Provides built-in power limiting with sinusoidal input characteristics

Applications

• High power factor preregulator circuits
• Power factor correction (PFC) systems
• Advanced power factor correction control designs

Procurement Notes

Verify the specific suffix 'AN' corresponds to the PDIP-16 through-hole package variant when sourcing. Confirm the switching frequency specification matches the design requirement of 200 kHz. Ensure the operating temperature range of 0 °C to +70 °C aligns with the target application environment. Cross-reference the manufacturer part number against official distributor catalogs to avoid confusion with surface-mount alternatives.

Selection Notes

Select this component for applications requiring robust average current mode PFC control in a through-hole format. The UC3854AN is suitable for designs needing integrated power limiting and zero-power detection. Consider the 200 kHz switching frequency for magnetics sizing. Verify that the 10 V to 20 V supply voltage range meets the system's operational requirements before finalizing the selection.

Part Context

The UC3854AN belongs to the UC3854A series of power factor correction controllers. It serves as a specialized solution for enhancing power quality in AC-DC conversion stages. This component is distinct from other variants like the UC3854DW due to its specific packaging and pin configuration, catering to different assembly needs.

Replacement Considerations

The UC3854BN is a documented alternative offering similar functionality in a PDIP-16 package. Note that some sources associate the UC3854N designation with the same family, though specific electrical parameters may vary slightly between revisions.