UC3854N/2

Overview

The UC3854N/2 is a controlled power factor correction (PFC) circuit manufactured by Texas Instruments. It operates with an average current mode control architecture and supports switching frequencies up to 200 kHz. The device functions within a supply voltage range of 14.5 V to 30 V and is rated for operation between 0°C and +70°C. It is housed in a 16-pin PDIP package designed for through-hole mounting.

Feature Summary

• Implements average current mode control for high-power-factor pre-regulation
• Integrates zero-power detection capabilities
• Includes internal soft-start functionality

Applications

• Power factor correction circuits
• High-power-factor pre-regulators

Procurement Notes

Verify the specific suffix designation against official documentation, as standard listings typically reference UC3854N without the /2 identifier. Confirm that the component matches the required 16-pin PDIP through-hole package and commercial temperature range specifications before procurement.

Selection Notes

Select this component for designs requiring average current mode PFC control. Ensure the application environment remains within the specified 0°C to +70°C operating temperature range. Verify compatibility with the 14.5 V to 30 V supply voltage requirements for proper controller initialization and operation.

Part Context

This part belongs to the UC3854 series of power factor correction controllers from Texas Instruments. The series is widely recognized for its integrated approach to power factor correction, combining essential analog blocks such as multipliers, error amplifiers, and drivers into a single monolithic IC.

Replacement Considerations

UC3854NG4