UC3854BDWTRG4

Overview

The UC3854BDWTRG4 is an enhanced high power factor preregulator from Texas Instruments, part of the UC3854B series. It operates in a 16-SOIC surface-mount package with a temperature range of 0°C to +70°C. The device features a switching frequency of 200 kHz and a typical operating supply current of 250 µA. It supports a supply voltage range of 10 V to 20 V.

Feature Summary

• Integrated zero-power detection for improved efficiency at light loads
• Current-mode control architecture for fast transient response
• Enhanced power factor correction capabilities for AC-DC applications

Applications

• High power factor pre-regulators
• AC-DC power supplies
• Power factor correction circuits

Procurement Notes

Verify the specific suffix 'TRG4' indicates tape-and-reel packaging and lead-free (RoHS) compliance. Confirm the SOIC-16 package variant matches your PCB footprint requirements. Ensure the commercial temperature range (0°C to +70°C) aligns with your system's thermal design constraints before finalizing procurement.

Selection Notes

Select this component when designing average current mode PFC controllers requiring a 200 kHz switching frequency. The UC3854B series offers improved performance over earlier generations. Consider the SOIC-16 package for space-constrained surface-mount designs. Verify that the 10 V to 20 V supply range suits your auxiliary power circuit.

Part Context

This part belongs to the UC3854 family of advanced power factor correction control ICs. The 'B' designation typically denotes an enhanced version with improved specifications compared to the base UC3854. The 'TRG4' suffix specifies reel packaging and green (lead-free/RoHS) material composition.

Replacement Considerations

UC3854BDW is the tube-packaged equivalent. UC3854BDWG4 is the lead-free tube version. UC3854BDWTR is the non-green tape-and-reel version.