UCC2540PWP

Power Supply Controllers, Monitors Overview

The UCC2540PWP is a high-efficiency secondary side synchronous buck PWM controller manufactured by Texas Instruments. It operates within a supply voltage range of 8.5V to 35V and supports a switching frequency of 300kHz. The device is housed in a 20-PowerTSSOP package, also identified as 20-HTSSOP, with dimensions of 0.173 inches (4.40mm) width. It functions as a positive output buck DC-DC switching controller suitable for surface mount installation. The operational temperature range spans from -40°C to 105°C.

Power Supply Controllers, Monitors Feature Summary

• Integrates synchronous rectification capabilities for improved efficiency in secondary side applications.
• Includes clock synchronization functionality to allow external timing control.
• Provides comprehensive control features including enable, ramp, reset, soft-start, and tracking.

Power Supply Controllers, Monitors Applications

• Secondary side synchronous buck converter designs
• High efficiency DC-DC power regulation systems
• Portable electronic devices requiring compact power management

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix PWP corresponds to the 20-PowerTSSOP package when sourcing. Confirm that the component meets the required thermal specifications for your operating environment, specifically the -40°C to 105°C range. Ensure compatibility with your PCB footprint for the 20-HTSSOP form factor. Check for any obsolescence notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring a dedicated secondary side controller with integrated synchronous rectification. It is suitable for designs needing clock synchronization and advanced control features like soft-start and tracking. Consider the 20-PowerTSSOP package constraints and the 8.5V to 35V supply voltage requirements during circuit design. Evaluate thermal performance needs against the 105°C maximum junction temperature limit.

Power Supply Controllers, Monitors Part Context

The UCC2540 belongs to the UCC254x family of high-efficiency secondary side synchronous buck PWM controllers from Texas Instruments. These devices are designed to optimize power conversion efficiency in isolated and non-isolated DC-DC converter topologies. The family typically includes variants with different packaging options to suit various board space and thermal management requirements.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers include UCC2540PWPRG4 and UCC2540PWPG4. Verify pinout and electrical parameter compatibility before substitution.