Texas Instruments TPS51275CRUKR

Overview

TPS51275CRUKR from Texas Instruments is a dual synchronous step-down controller designed for notebook and embedded computing system power rails. The device supports 5V and 3.3V buck controller outputs together with integrated LDO-related support for standby, bias, or auxiliary supply functions.

As part of the TI TPS51275C controller family, TPS51275CRUKR combines dual buck-control architecture, notebook system rail support, compact 20-pin WQFN packaging, and power-management behavior suited to 5V/3.3V motherboard supplies. For engineers reviewing the TPS51275CRUKR datasheet, TPS51275CRUKR pinout, TPS51275CRUKR application, or TPS51275CRUKR equivalent, this device is widely used in notebook computers, embedded computing boards, 5V and 3.3V system rails, standby bias supplies, compact motherboard power designs, and portable PC platforms.

Technical Context

In notebook and embedded computing systems, TPS51275CRUKR operates as a dual synchronous buck controller that drives external MOSFET power stages to generate regulated 5V and 3.3V system rails.

Unlike a fully integrated low-current regulator, the controller-based architecture lets designers scale the power stage with external MOSFETs, inductors, and sense components. This is useful for motherboard supplies where efficiency, transient response, and thermal behavior depend on the selected external components.

TPS51275CRUKR is commonly used in compact computing boards that require main 5V/3.3V rails, standby or bias support, sequencing behavior, and a small WQFN controller footprint.

Key Specifications

Pinout & Package

The TPS51275CRUKR pinout includes controller supply pins, gate-drive outputs, switch-node sensing, feedback/compensation pins, enable and control pins, LDO-related pins, and power-good or status functions.

For PCB design, the external MOSFETs, inductors, current paths, and input/output capacitors should be laid out as the main power stage, while feedback and compensation traces should remain short and noise-free.

Key Features

• Dual synchronous buck-controller architecture supports 5V and 3.3V rails.
• External MOSFETs allow current capability to be set by the power stage.
• Integrated LDO support helps generate bias or standby supplies.
• Compact 20-pin WQFN package saves motherboard area.
• Notebook-focused control behavior supports system power sequencing.
• Wide operating temperature range supports embedded computing use.

Applications

Equivalent & Alternatives

When evaluating a TPS51275CRUKR equivalent, engineers should compare dual 5V/3.3V controller architecture, LDO support, package, external MOSFET drive requirements, standby behavior, and notebook platform compatibility.

Compared with TPS51225BRUKR, TPS51275CRUKR should be selected when the TPS51275C feature set and RUK package match the target design. TPS51275CRUKR vs TPS51285ARUKR selection depends on controller functions, LDO support, pinout, standby behavior, and motherboard power architecture.

Quality

TPS51275CRUKR should be sourced as original Texas Instruments components through traceable supply channels. Quality checks may include WQFN package inspection, top-mark validation, solderability testing, and controller electrical verification.

Production validation should include gate-drive behavior, 5V/3.3V rail regulation, soft-start, power-good timing, thermal behavior of external MOSFETs, and loop stability across load transitions.

Availability

TPS51275CRUKR available at Aetrix Electronics and is suitable for notebook, embedded computing, motherboard, and 5V/3.3V system power applications.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming RUK package, controller feature set, external MOSFET design, lead time, lifecycle status, and sourcing continuity helps reduce procurement risk.

Manufacturer

Texas Instruments is a global semiconductor manufacturer specializing in analog ICs, embedded processors, power-management devices, interface products, sensing solutions, and industrial semiconductor technologies.

The TPS51275C product family is a dual synchronous buck-controller series for notebook and embedded computing systems requiring efficient 5V and 3.3V rails with compact controller integration.

FAQ

What is TPS51275CRUKR used for?

TPS51275CRUKR is used for notebook and embedded computing systems requiring dual 5V and 3.3V synchronous buck controller rails.

Where can I find the TPS51275CRUKR datasheet download?

The TPS51275CRUKR datasheet is available from Texas Instruments and includes electrical specifications, package data, pin functions, and application design information.

What should be considered in TPS51275CRUKR pinout design?

Designers should route gate-drive and switch-node paths carefully, keep feedback and compensation quiet, and design external MOSFET power paths for current and thermal requirements.

Does TPS51275CRUKR include integrated power MOSFETs?

No. It is a controller that drives external MOSFETs for the synchronous buck power stages.

What are common TPS51275CRUKR equivalent solutions?

Common candidates include TPS51225BRUKR and TPS51285ARUKR depending on pinout, controller features, LDO behavior, and system rail requirements.