UCC38500N

Overview

The UCC38500N is a power factor correction (PFC) controller manufactured by Texas Instruments, designed for high-performance power supply applications. It operates within a supply voltage range of 14.5V to 30V and supports switching frequencies up to 200kHz. The device utilizes average current mode control to ensure accurate power factor correction. It is housed in a 16-pin PDIP package with through-hole mounting capabilities. The operational temperature range extends from 0°C to 70°C, ensuring reliability in standard industrial environments.

Feature Summary

• Implements average current mode control for precise power factor correction
• Supports switching frequencies up to 200kHz for efficient power conversion
• Integrated zero-power detection capability for enhanced efficiency at light loads

Applications

• Power factor pre-regulator circuits
• High-efficiency AC-DC power supplies
• Industrial power management systems

Procurement Notes

Verify the specific suffix 'N' confirms the 16-pin PDIP package variant when sourcing. Confirm RoHS compliance status as indicated in official documentation. Ensure the operating environment remains within the specified 0°C to 70°C temperature range. Cross-reference the manufacturer part number UC3854N if evaluating legacy equivalents, noting potential parameter differences. Validate pinout compatibility during PCB layout integration.

Selection Notes

Select this component for designs requiring robust average current mode PFC control in a through-hole package. Consider the 16-pin PDIP form factor for ease of prototyping or manual assembly processes. Evaluate the 200kHz maximum switching frequency against thermal constraints and EMI requirements. Compare against the UC3854N family for similar functionality, verifying that the specific electrical parameters meet the target application's voltage and current specifications.

Part Context

This component belongs to the UC385x series of power factor correction controllers from Texas Instruments. It shares architectural similarities with other members like the UC3854, focusing on average current mode control techniques. The series is widely recognized for providing reliable power factor correction solutions in various power supply topologies, offering a balance between performance and implementation simplicity.

Replacement Considerations

Public confirmed substitute part numbers include UC3854N. Verify functional equivalence regarding control topology and pinout before substitution.