LM26480QSQ-CF/NOPB

Overview

The LM26480QSQ-CF/NOPB is an automotive-grade power management IC integrating two high-current synchronous buck converters and two low-dropout linear regulators. It operates with an input voltage range of 1.74 V to 5.5 V, providing adjustable output voltages from 800 mV to 3.5 V. The buck stages deliver up to 1.5 A each, while the LDOs provide 300 mA each. Operating at a fixed 2 MHz switching frequency, the device achieves efficiencies up to 96%. It features a quiescent current of 33 µA, operates within a temperature range of -40°C to +125°C, and is housed in a 24-pin WQFN package.

Feature Summary

• Integrates dual 1.5A synchronous step-down DC/DC converters and dual 300mA linear regulators for comprehensive power distribution.
• Optimized for automotive applications with AEC-Q100 qualification and extended operating temperature range.
• Features high efficiency up to 96% with a fixed 2MHz PWM switching frequency to minimize external component size.
• Includes built-in protection mechanisms such as thermal overload, current limit, and undervoltage lockout.

Applications

• Powering advanced application processors and FPGAs in automotive infotainment systems.
• Supplying internal processor functions and I/O interfaces via integrated LDOs.
• General-purpose power management in automotive electronic control units (ECUs).

Procurement Notes

Verify the specific suffix CF against the manufacturer datasheet to confirm pinout and functional compatibility, as suffixes often denote tape-and-reel packaging or specific binning rather than electrical differences. Ensure the procurement source provides valid RoHS compliance documentation and confirms the component meets AEC-Q100 automotive reliability standards required for your specific application environment.

Selection Notes

Select this component when designing automotive systems requiring a compact solution for multiple voltage rails. It is suitable for applications needing both high-current switching regulation for logic cores and precise LDO regulation for sensitive analog circuits. Consider the 24-pin WQFN package constraints and thermal dissipation requirements given the 1.5A output capability per buck converter.

Part Context

This part belongs to the Texas Instruments LM26480 family of specialized PMICs designed for automotive digital loads. It complements other TI devices like the LM26420 by offering integrated linear regulation alongside switching converters, reducing the bill of materials for complex processor power architectures in vehicles.

Replacement Considerations

The LM26480SQ-AA/NOPB is a non-automotive grade alternative within the same family. Verify if automotive qualification is strictly required; if not, the AA variant may be considered. No direct cross-brand replacements are confirmed in public data without detailed parameter matching.