Texas Instruments LM26480SQ-AA/NOPB

Overview

LM26480SQ-AA/NOPB from Texas Instruments is a multi-function power management unit optimized for low-power digital applications, advanced application processors, FPGAs, and compact embedded systems. The device integrates two high-efficiency 1.5 A step-down DC-DC buck regulators and two 300 mA linear regulators in a 24-pin WQFN package.

As a four-rail PMU solution, LM26480SQ-AA/NOPB provides individual enable controls, power-good signaling, automatic soft start, undervoltage lockout, current overload protection, thermal overload protection, and an internal power-on-reset circuit. For engineers reviewing the LM26480SQ-AA/NOPB datasheet, LM26480SQ-AA/NOPB pinout, LM26480SQ-AA/NOPB application, or LM26480SQ-AA/NOPB equivalent, this device is widely used in compact processor and FPGA power architectures.

Technical Context

In embedded processor systems, LM26480SQ-AA/NOPB typically generates multiple low-voltage rails from a 2.8 V to 5.5 V input source. Its two buck regulators supply high-current digital rails, while its two LDOs support internal processor functions, I/O rails, or low-noise auxiliary loads.

The 2 MHz switching frequency supports small inductors and capacitors, while PWM-to-PFM automatic mode change under low load helps improve efficiency in portable and low-power operation. The integrated POR function monitors buck output levels and supports controlled startup behavior.

LM26480SQ-AA/NOPB is commonly used in portable digital systems, application-processor modules, FPGA boards, communication devices, industrial embedded controllers, and space-constrained multi-rail power platforms.

Key Specifications

Pinout & Package

The LM26480SQ-AA/NOPB pinout is arranged for dual buck regulation, dual LDO output, enable controls, feedback networks, power-good outputs, input supply, and ground/thermal connections. The WQFN exposed pad supports thermal dissipation and low-impedance grounding.

For PCB design, place buck input capacitors, inductors, and output capacitors close to the device pins. Keep feedback traces away from switching nodes, use short high-current paths, and connect the exposed pad to a solid ground plane for thermal and electrical performance.

Key Features

• Dual 1.5 A step-down buck regulators and dual 300 mA LDO regulators.
• 2.8 V to 5.5 V input voltage range for portable and embedded systems.
• 2 MHz PWM switching frequency supports compact external components.
• PWM-to-PFM automatic mode change improves light-load efficiency.
• Individual enable and power-good functions support controlled sequencing.
• Thermal overload, current overload, and undervoltage lockout protection.

Applications

Equivalent & Alternatives

When evaluating a LM26480SQ-AA/NOPB equivalent, engineers should compare regulator topology, output-current capability, package footprint, thermal behavior, sequencing functions, control interface, and long-term sourcing requirements.

Compared with TPS65023, LM26480SQ-AA/NOPB is optimized for compact dual-buck plus dual-LDO processor power architectures with individual enable and power-good functions. LM26480SQ-AA/NOPB vs TPS6521905RHBR selection depends on rail count, software-control requirements, NVM configuration needs, output-current budget, and PCB footprint constraints.

Quality

LM26480SQ-AA/NOPB should be sourced as original Texas Instruments components through traceable and controlled supply channels. Quality verification procedures may include package inspection, marking validation, solderability testing, moisture-sensitivity handling review, and electrical output verification under representative loads.

Because the device supplies multiple system rails, production validation should include startup sequencing, buck and LDO output accuracy, load-transient response, thermal rise, power-good timing, and protection behavior. Traceable sourcing helps reduce counterfeit risk and supports long-term manufacturing quality.

Availability

LM26480SQ-AA/NOPB available at Aetrix Electronics and is suitable for compact processor, FPGA, portable, and industrial embedded power-management platforms requiring stable component availability and repeatable production support.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics manufacturers, communication-system developers, and embedded product programs.

For production builds, confirming package type, regulator rail requirements, load-current budget, lead time, lifecycle status, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.

Manufacturer

Texas Instruments is a semiconductor manufacturer specializing in analog ICs, power-management technologies, embedded processors, sensors, connectivity products, and industrial semiconductor solutions for automotive, industrial, communication, and consumer electronic applications.

For embedded power systems, Texas Instruments provides DC-DC converters, LDO regulators, PMICs, sequencers, supervisors, and reference designs that support compact and scalable power-distribution architectures.

FAQ

What is LM26480SQ-AA/NOPB used for?

LM26480SQ-AA/NOPB is used for multi-rail power management in application processors, FPGA boards, portable devices, communication modules, and compact embedded systems.

Where can I find the LM26480SQ-AA/NOPB datasheet download?

The LM26480SQ-AA/NOPB datasheet download is available from Texas Instruments and includes electrical specifications, regulator operation, package data, and PCB application guidance.

How many regulators are integrated in LM26480SQ-AA/NOPB?

LM26480SQ-AA/NOPB integrates two 1.5 A buck converters and two 300 mA LDO regulators.

What should be considered in LM26480SQ-AA/NOPB pinout design?

Pinout design should prioritize compact buck power loops, clean feedback routing, exposed-pad grounding, LDO capacitor placement, enable sequencing, and power-good/reset signal routing.

What are common LM26480SQ-AA/NOPB equivalent solutions?

Common alternatives include TPS65023 and TPS6521905RHBR depending on rail count, current requirements, package constraints, and control-interface needs.