AOZ5279QI

Overview

The AOZ5279QI is a high-current, high-performance Smart Power Stage (SPS) manufactured by Alpha & Omega Semiconductor Inc. It integrates a gate driver with two asymmetrical MOSFETs to form a half-bridge configuration suitable for synchronous buck converters. The device operates within a 3V to 25V power supply range and supports output currents up to 60A. Key electrical characteristics include a 25V drain-source voltage rating and a PWM control interface with an enable pin. The component is housed in a compact QFN 5x6 package with 39 leads, designed for efficient thermal management and space-constrained applications.

Feature Summary

• Integrates a gate driver with asymmetrical high-side and low-side MOSFETs into a single package
• Supports wide input voltage range from 3V to 25V for versatile power supply applications
• Features PWM control interface with dedicated enable functionality for precise switching management
• Optimized for high-current synchronous buck converter topologies with integrated protection features

Applications

• Gaming notebook GPU power delivery systems
• High-performance CPU voltage regulation modules
• Server and workstation power distribution networks
• Industrial motor control drives requiring high current density

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as AOZ5279QI-01 may exist with identical core functionality but different packaging or revision statuses. Confirm lead times directly with authorized distributors, as manufacturing timelines can fluctuate based on global supply chain conditions. Ensure compatibility with existing PCB footprints, specifically the QFN 5x6-39L outline, before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring high current density in a minimal footprint. The integrated nature of the SPS reduces external component count compared to discrete solutions. Consider the 60A capability and 25V rating when sizing for load requirements. Evaluate thermal performance needs given the high current handling, ensuring adequate copper area for heat dissipation in the target application environment.

Part Context

This part belongs to Alpha & Omega Semiconductor's Smart Power Stage family, which consolidates power switching and driving logic. The AOZ5279QI represents a solution for demanding mobile and industrial computing platforms where efficiency and size are critical constraints. It replaces traditional discrete MOSFET and driver combinations, simplifying layout and improving transient response in high-speed digital loads.

Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided documentation. Designers should consult manufacturer cross-reference guides for equivalent SPS devices with matching current ratings and package dimensions.