AOZ18101DI-01

Overview

The AOZ18101DI-01 is a 5A electronic fuse (eFuse) solution from Alpha & Omega Semiconductor, designed for high-reliability server and storage applications. It operates within an input voltage range of 3.5V to 14V with a maximum absolute rating of 22V. The device integrates low RDS(ON) back-to-back MOSFETs with a typical on-resistance of 20mΩ, housed in a compact 3mm x 3mm 10-DFN package with exposed pad. It features true reverse current blocking (TRCB), programmable overcurrent protection, UVLO, OVP, thermal shutdown, and startup SOA management.

Feature Summary

• Integrates advanced TrenchFET technology with IC design for robust bus protection
• Includes true reverse current blocking to prevent backflow when output exceeds input
• Provides comprehensive protection against overcurrent, overvoltage, and thermal faults
• Enables hot insertion into 12V backplanes via startup SOA management

Applications

• Server power bus protection
• Storage system main power monitoring
• High reliability load isolation

Procurement Notes

Verify the specific suffix DI-01 to confirm the inclusion of True Reverse Current Blocking (TRCB). Ensure compatibility with 3.5V to 14V input ranges. Confirm that the 10-DFN footprint matches the PCB layout requirements. Check datasheet for thermal dissipation needs under continuous 5A load conditions.

Selection Notes

Select this component for systems requiring integrated eFuse functionality without external discrete FETs. Choose the DI-01 variant specifically when reverse current flow must be actively blocked. Consider the DI-03/DI-04 variants if TRCB is undesirable for highly inductive loads like fans or drives. Ensure the 20mΩ on-resistance meets efficiency targets.

Part Context

This part belongs to the AOZ18101DI series, representing AOS's first eFuse solution tailored for server applications. It replaces traditional designs using separate hot-swap controllers and discrete FETs. The series utilizes multi-chip packaging to combine high-performance ICs with high-SOA Trench MOSFETs in a small form factor.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.