UC2853ADTR

Overview

The UC2853ADTR is a high power factor preregulator controller manufactured by Texas Instruments. It operates within an operating supply voltage range of up to 40 V and features UVLO thresholds at 11.5 V (on) and 9.5 V (off). The device supports a practical maximum operating frequency of 0.115 MHz and utilizes average current mode control for continuous conduction mode (CCM) applications. It is available in SOIC-8 packages.

Feature Summary

• Implements average current mode control for single-phase PFC applications
• Includes overvoltage protection (OVP) functionality
• Features undervoltage lockout with defined on/off thresholds

Applications

• High power factor preregulators
• Single-phase power factor correction circuits

Procurement Notes

Verify the specific suffix 'DTR' against the official datasheet to confirm package type, temperature grade, and reel specifications. Ensure the component matches the required industrial or commercial temperature range. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability before procurement.

Selection Notes

Select this component for designs requiring average current mode PFC control. Verify that the input voltage stays within the 40 V operating limit. Confirm compatibility with the SOIC-8 footprint. Ensure the application supports continuous conduction mode operation as specified for this controller architecture.

Part Context

This part belongs to the UC2853 family of high power factor preregulators from Texas Instruments. It is functionally related to the UC2852 and UC3853 series, sharing similar control architectures but differing in temperature ratings and packaging options. The 'A' designation typically indicates an extended or specific temperature grade compared to standard variants.

Replacement Considerations

Publicly confirmed substitutes include UC2852 and UC3853. Verify pinout compatibility and thermal performance when substituting.