AOZ18101DI-02

Overview

The AOZ18101DI-02 is a 5A electronic fuse (eFuse) solution from Alpha & Omega Semiconductor, designed for server and storage bus protection. 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. It features true reverse current blocking (TRCB) to prevent backflow when output exceeds input, alongside programmable overcurrent protection, UVLO, OVP, thermal shutdown, and startup SOA management.

Feature Summary

• Integrates TrenchFET technology with advanced IC design for robust power switching
• Provides true reverse current blocking to isolate load during fault conditions
• Includes startup SOA management for safe hot insertion onto 12V backplanes
• Combines high-performance IC with low RDS(ON) back-to-back MOSFETs

Applications

• Server main power bus protection
• Storage system bus protection
• High reliability system power distribution

Procurement Notes

Verify the specific suffix DI-02 to confirm the inclusion of True Reverse Current Blocking (TRCB) functionality, as variants like DI-03 and DI-04 disable this feature for inductive loads. Ensure the 10-DFN-EP(3x3) package matches your PCB footprint requirements. Confirm that the 3.5V to 14V operating range aligns with your system's input voltage specifications before finalizing procurement.

Selection Notes

Select the AOZ18101DI-02 when true reverse current blocking is required to protect against backflow in bidirectional power paths. Choose this component over DI-03/DI-04 variants if the application does not involve highly inductive loads like hard drives or fans that might trigger false shutdowns due to reverse current spikes. This part replaces discrete FET solutions, offering higher integration and smaller board space.

Part Context

This eFuse belongs to Alpha & Omega Semiconductor's first dedicated eFuse solution line for server applications. It utilizes multi-chip packaging to combine a protected IC with high Safe Operating Area (SOA) Trench MOSFETs. The series addresses the industry shift from traditional hot-swap controllers and external FETs toward more compact, integrated protection schemes for critical infrastructure.

Replacement Considerations

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