UCC38051P

Overview

The UCC38051P is a Power Factor Correction (PFC) controller IC manufactured by Texas Instruments, designed for discontinuous conduction mode (DCM) or transition mode operation. It operates within a supply voltage range of 12V to 18V and supports switching frequencies up to 200kHz. The device features a low startup current of 75 µA and functions reliably across an operating temperature range of 0°C to 70°C. It is housed in an 8-PDIP package with a width of 0.300 inches (7.62mm), suitable for through-hole mounting.

Feature Summary

• Supports transition mode PFC control for improved efficiency at light loads
• Integrated high-voltage startup circuit minimizes external component count
• Fixed-frequency operation simplifies filter design and EMI management

Applications

• Universal AC-DC power supplies requiring power factor correction
• Adapter and charger designs for consumer electronics
• Offline power conversion systems utilizing transition mode topology

Procurement Notes

Verify the specific suffix and revision level against the official datasheet to ensure compatibility with existing designs. Confirm RoHS compliance status as manufacturing processes may evolve. Check for obsolescence notices or product discontinuance notifications from Texas Instruments prior to finalizing procurement decisions.

Selection Notes

Select this component for applications requiring simple transition mode PFC implementation without complex digital control. Ensure the design accommodates the 200kHz maximum switching frequency constraints. Verify that the 8-DIP package fits the mechanical layout requirements and thermal dissipation needs of the target enclosure.

Part Context

The UCC38051 belongs to the UCC3805x family of PFC controllers, which are optimized for cost-sensitive, high-volume applications. It serves as a complement to other Texas Instruments power management solutions, often paired with secondary side regulators in complete power supply architectures.

Replacement Considerations

Consult the official Texas Instruments substitution guide for verified alternatives. Cross-reference pinouts and electrical specifications carefully when considering legacy UC385x series devices or newer UCC2805x variants.