UC3854ANG4

Overview

The UC3854ANG4 is an enhanced high power factor preregulator integrated circuit manufactured by Texas Instruments. It operates in average current mode control to achieve high power factor correction. The device supports a switching frequency of 200 kHz and functions within a supply voltage range of 10V to 20V. It is housed in a 16-pin PDIP package designed for through-hole mounting. The component operates reliably across a temperature range from 0°C to +70°C.

Feature Summary

• Implements average current mode control for precise power factor correction
• Integrates zero-power detection capabilities to minimize standby losses
• Features internal compensation and protection circuits for simplified design

Applications

• High power factor preregulators
• Power factor correction circuits
• Switched-mode power supplies

Procurement Notes

Verify the specific suffix G4 indicates RoHS compliance status as per manufacturer documentation. Confirm the PDIP-16 package dimensions match the target PCB footprint requirements. Ensure the operating temperature range aligns with the intended environmental conditions. Check for any end-of-life notices or obsolescence warnings associated with this specific part number before finalizing procurement plans.

Selection Notes

Select this component when average current mode control is required for high-efficiency power factor correction. The 200 kHz switching frequency allows for smaller passive components compared to lower frequency alternatives. The PDIP-16 package is suitable for prototyping and applications requiring through-hole assembly. Verify that the 10V to 20V supply voltage range meets the system's power delivery specifications.

Part Context

This part belongs to the UC3854A series of advanced power factor correction control ICs. It serves as an enhanced version of earlier models, offering improved performance in power factor regulation. The UC3854 family is widely used in AC-DC conversion stages where regulatory compliance for harmonic distortion is critical.

Replacement Considerations

UC3854AN is listed as a manufacturer-recommended alternative.