UC3855BN

Overview

The UC3855BN is a high-performance power factor preregulator integrated circuit manufactured by Texas Instruments. It operates with a switching frequency of 500 kHz and supports a supply voltage range from 12 V to 40 V. The device utilizes average current mode control to achieve high power factor correction. It is housed in a 20-lead Plastic Dual In-Line Package (PDIP) designed for through-hole mounting. The operational temperature range extends from 0 °C to +70 °C, ensuring reliable performance in standard industrial environments.

Feature Summary

• Implements average current mode control for precise power factor correction
• Features high switching frequency operation at 500 kHz
• Includes built-in zero-power detection capabilities

Applications

• High performance power factor preregulators
• Power factor correction circuits
• Universal input AC-DC power supplies

Procurement Notes

Verify the specific suffix 'BN' against the manufacturer's latest documentation to confirm package type and material specifications. Ensure the procurement channel provides valid traceability data. Confirm that the component meets the required RoHS compliance standards as indicated in the official datasheet before finalizing orders.

Selection Notes

Select this component when designing systems requiring average current mode PFC with a 500 kHz switching frequency. It is suitable for applications needing a 20-pin PDIP package for through-hole assembly. Consider the 12 V to 40 V operating voltage range and the 0 °C to +70 °C temperature limits during system design.

Part Context

This part belongs to the UC3855B series of power factor correction controllers. It serves as a high-performance alternative to previous generations of PFC regulators. The device is categorized under PMIC - Power Management ICs within the broader Texas Instruments product portfolio.

Replacement Considerations

The UC3855BN is listed as an alternative to the UC3855BN. Verify pin compatibility and electrical specifications before substituting with other members of the UC3855 family.