AOZ1233QI-01

Overview

The AOZ1233QI-01 is a synchronous step-down DC-DC converter from Alpha & Omega Semiconductor, part of the EZBuck family. It integrates high-side and low-side N-channel power MOSFETs into a single package to deliver an output current of 8A. The device operates with an input voltage range of 4.5V to 28V and supports adjustable output voltages starting from 0.6V. It utilizes fixed-frequency PWM control with a switching frequency of 750kHz. The component is housed in a compact 8-DFN (3x3mm) surface-mount package with an exposed pad for thermal dissipation.

Feature Summary

• Integrated synchronous rectification using internal N-channel MOSFETs
• Fixed 750kHz switching frequency for reduced passive component size
• EZBuck architecture simplifies design with minimal external components
• Adjustable output voltage via external resistor divider

Applications

• Point-of-load regulation for industrial equipment
• Power supply stages for consumer electronics
• Voltage regulation for telecom infrastructure
• Computing system power distribution networks

Procurement Notes

Verify the specific suffix '01' against the manufacturer datasheet to confirm pinout and electrical characteristics match your schematic requirements. Confirm RoHS compliance status and moisture sensitivity level prior to PCB assembly planning. Ensure the 8-DFN footprint matches your board layout guidelines. Check for obsolescence notices as this component may have limited availability or replacement recommendations.

Selection Notes

Select this component when an 8A continuous load capability is required within a 28V maximum input constraint. The 750kHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance of the 3x3mm DFN package under your specific ambient temperature and airflow conditions. Verify that the minimum output voltage of 0.6V aligns with your downstream logic or memory requirements.

Part Context

This part belongs to the AOZ1233 series of EZBuck regulators, designed for high-density power applications. The series offers various output voltage options and packaging variants to suit different space constraints. Alpha & Omega Semiconductor positions these devices for cost-sensitive, high-volume markets requiring reliable synchronous buck conversion without complex external driver circuits.

Replacement Considerations

Consult the official Alpha & Omega Semiconductor datasheet for direct pin-to-pin replacements or functional equivalents. Cross-reference with other EZBuck family members if current or voltage ratings need adjustment. Verify compatibility with existing control loops and thermal management solutions before substituting.