LM26480QSQX-AA/NOPB

Overview

The LM26480QSQX-AA/NOPB is an automotive-grade power management integrated circuit (PMIC) designed for low-power digital applications. It integrates two high-efficiency 1.5A buck DC-DC converters and two 300mA low-dropout (LDO) linear regulators within a single 24-pin WQFN package. The device operates with an input voltage range of 2.8V to 5.5V, supporting output voltages from 800mV to 3.5V. It features a 2MHz PWM switching frequency, automatic soft-start, and precise internal reference. The component meets AEC-Q100 standards for automotive reliability and includes comprehensive protection mechanisms such as thermal overload and current limit protection.

Feature Summary

• Integrates dual 1.5A synchronous buck converters and dual 300mA LDOs for efficient multi-rail power distribution
• Optimized for automotive environments with AEC-Q100 qualification and extended temperature capability
• Provides precise voltage regulation with internal references and programmable output settings
• Includes built-in safety features including thermal shutdown, overcurrent protection, and undervoltage lockout

Applications

• Powering advanced application processors in automotive infotainment systems
• Supplying power rails for Field Programmable Gate Arrays (FPGAs)
• Providing regulated voltage for internal processor functions and I/O interfaces
• Low-power digital logic supply in automotive electronic control units

Procurement Notes

Verify the specific suffix 'AA' against the manufacturer's official datasheet to confirm pinout compatibility and functional equivalence. Ensure the procurement channel provides valid traceability documentation required for automotive-grade components. Confirm that the delivered parts match the specified WQFN-24 packaging and tape-and-reel format. Cross-reference the manufacturing date code with current lifecycle status to avoid obsolescence risks during production.

Selection Notes

Select this component when designing systems requiring a compact solution for multiple voltage rails in automotive digital circuits. It is suitable for applications needing both high-current switching regulation for core logic and low-noise linear regulation for sensitive analog or I/O sections. Consider the 24-pin WQFN footprint for space-constrained PCB layouts. Evaluate the 2MHz switching frequency for its impact on external inductor size and electromagnetic interference characteristics relative to lower-frequency alternatives.

Part Context

This part belongs to the Texas Instruments LM26480 family of power management ICs. The series is specifically engineered for automotive digital loads, combining switching and linear regulation technologies. The 'Q' designation indicates automotive qualification, while the 'AA' suffix typically denotes specific package or testing variations within the product line. It serves as a consolidated power solution replacing discrete regulator designs.

Replacement Considerations

Consult the official TI substitution guide for verified equivalents. Direct replacements may include other members of the LM26480 family with compatible pinouts. Verify that any substitute maintains the same AEC-Q100 grade and electrical specifications for input/output ranges and current capabilities.