TPS51275BRUKR

Overview

The TPS51275BRUKR is a dual synchronous buck controller from 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 switching frequencies between 300 kHz and 355 kHz. The device delivers up to 100 mA output current per channel with fixed output voltages of 3.3 V or 5 V. Housed in a 20-WQFN package with exposed pad, it functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates two independent synchronous buck controllers within a single compact package to minimize board space.
• Utilizes D-CAP™ control architecture to ensure stable operation without requiring external compensation networks.
• Supports flexible switching frequency selection to optimize efficiency and passive component size.

Applications

• Point-of-load regulation for embedded systems
• Power distribution networks in industrial equipment
• Voltage step-down stages for communication modules

Procurement Notes

Verify the specific suffix 'BRUKR' against the manufacturer's official datasheet to confirm pinout compatibility and thermal pad specifications. Ensure that the selected packaging format matches the assembly requirements, as tape-and-reel quantities may vary by distributor. Confirm RoHS compliance status directly with the supplier documentation prior to integration into final assemblies.

Selection Notes

Select this component when designing systems requiring dual isolated low-current rails from a higher voltage bus. The fixed output options simplify design compared to adjustable regulators. Evaluate the thermal performance of the WQFN-20 package against the expected ambient conditions to ensure reliable operation within the specified temperature limits.

Part Context

This part belongs to the TPS51275B family of dual synchronous buck controllers. It shares architectural similarities with other members like the TPS51275RUKT but differs in specific electrical characteristics and packaging configurations. The series is optimized for applications needing multiple regulated outputs from a single controller IC.

Replacement Considerations

The TPS51275RUKT is a documented alternative within the same product family. Verify functional equivalence regarding switching frequency ranges and output capabilities before substitution.