TPS51275RUKR

Overview

The TPS51275RUKR is a dual synchronous buck switching controller manufactured by Texas Instruments, designed for high-efficiency power conversion in compact form factors. It operates within an input voltage range of 5 V to 24 V and supports standard output voltages including 3.3 V and 5 V. The device features a fixed switching frequency of 300 kHz and maintains a quiescent current of 800 uA during operation. It is housed in a WQFN-20 package suitable for surface mount technology. The component functions reliably across a temperature range from -40°C to +85°C, ensuring stability in various industrial and commercial environments.

Feature Summary

• Dual synchronous buck control architecture for efficient multi-rail power distribution
• Integrated D-CAP™ mode control for stable operation with ceramic output capacitors
• Supports flexible configuration for standard system voltage rails

Applications

• Industrial equipment power management systems
• Telecommunications infrastructure power supplies
• Enterprise server and storage subsystem regulation

Procurement Notes

Verify the specific suffix RUKR against the manufacturer datasheet to confirm the reel packaging configuration and tape-and-reel specifications. Ensure compatibility with moisture sensitivity level requirements during assembly processing. Cross-reference the ordering number with official Texas Instruments documentation to validate the exact pinout and thermal pad designations before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring two independent synchronous buck channels driven by a single controller IC. It is appropriate for applications needing a 300 kHz switching frequency to balance efficiency and component size. Consider the WQFN-20 package constraints for PCB layout and thermal dissipation capabilities relative to the expected load currents and ambient operating conditions.

Part Context

This part belongs to the TPS51275 series of dual synchronous buck controllers from Texas Instruments. The series utilizes D-CAP™ mode topology to provide fast transient response without requiring external compensation networks. The RUKR designation specifically identifies the reel-packaged variant of the controller, distinguishing it from cut-tape or sample configurations within the same functional family.

Replacement Considerations

Consult the official TPS51275 datasheet for direct pin-compatible alternatives within the same series. Verify that any substitute component matches the 5 V to 24 V input range and 300 kHz switching frequency specifications.