LM26480QSQX-8D/NOPB

Overview

The LM26480QSQX-8D/NOPB is an automotive-grade power management unit featuring two 1.5A buck converters and two 300mA LDOs. It operates with an input voltage range of 2.8V to 5.5V, providing adjustable outputs from 800mV to 3.5V for the DC-DC sections and 1V to 3.5V for the LDOs. The device utilizes a 2MHz PWM switching frequency and includes automatic soft-start functionality. Packaged in a 24-pin WQFN EP, it supports operation temperatures from -40°C to +85°C and meets AEC-Q100 standards.

Feature Summary

• Integrates dual high-efficiency 1.5A buck regulators and dual 300mA low-dropout linear regulators within a single compact package.
• Includes comprehensive protection mechanisms such as thermal overload protection, current limit protection, and undervoltage lockout detection.
• Features precise internal reference voltages and automatic soft-start capabilities to ensure stable system initialization.

Applications

• Advanced application processors
• Field-programmable gate arrays (FPGA)
• Automotive infotainment systems

Procurement Notes

Verify the specific suffix '8D' against the manufacturer's official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the component carries the AEC-Q100 qualification mark if automotive reliability is mandatory. Cross-reference the 24-pin WQFN EP footprint dimensions with your PCB layout guidelines before finalizing procurement.

Selection Notes

Select this component when designing for advanced digital logic requiring multiple distinct voltage rails from a single source. It is suitable for applications needing both high-current switching regulation and low-noise linear regulation. Consider the 24-pin WQFN package size constraints and the 2MHz switching frequency impact on external passive component selection during the initial schematic phase.

Part Context

This part belongs to the LM26480 family of integrated power management units designed for complex digital loads. It consolidates multiple power stages into one solution, reducing board space compared to discrete regulator implementations. The Q-suffix indicates automotive grade qualification, distinguishing it from standard commercial variants within the same functional family.

Replacement Considerations

Consult the Texas Instruments LM26480 product page for officially listed cross-reference or next-generation replacements. Verify that any substitute maintains the 24-pin WQFN EP package and AEC-Q100 certification for direct integration without redesign.

FAQ

What is the maximum output current for the integrated LDOs?

Each of the two integrated linear regulators provides a maximum output current of 300mA.

Does the device support automatic soft-start?

Yes, the integrated buck converters feature automatic soft-start functionality to manage inrush current during startup.