AOZ1038DI-1

Overview

The AOZ1038DI-1 is a synchronous buck regulator from the EZBuck series, manufactured by Alpha & Omega Semiconductor Inc. It operates within an input voltage range of 4.5 V to 18 V and delivers up to 6 A of continuous output current. The output voltage is adjustable down to 0.8 V. Key electrical parameters include a 450 kHz fixed PWM switching frequency, 55 mΩ internal high-side switch resistance, and 12 mΩ internal low-side switch resistance. The device achieves efficiencies up to 95% and includes integrated protection features such as thermal shutdown, cycle-by-cycle current limit, and short-circuit protection.

Feature Summary

• Synchronous buck topology with integrated high-side and low-side switches
• Fixed 450 kHz PWM operation for consistent timing
• Integrated protection mechanisms including thermal shutdown and current limiting
• Adjustable output voltage capability starting from 0.8 V

Applications

• Point of load DC/DC converters
• LCD TV power supplies
• Set top boxes
• DVD / Blu-ray players/recorders
• Cable modems
• PCIe graphics cards

Procurement Notes

Verify the specific suffix DI-1 against official datasheets to confirm package type and pinout compatibility. Confirm RoHS compliance status through manufacturer documentation. Check for product change notices or end-of-life announcements prior to final design approval. Ensure ordering information matches the exact part number variant required for the application.

Selection Notes

Select this component for applications requiring a compact, high-efficiency synchronous buck solution. The 6 A current rating suits moderate power loads in consumer electronics. Consider the 450 kHz switching frequency when designing external passive components. Evaluate thermal performance requirements given the exposed pad packages available for this series.

Part Context

The AOZ1038 belongs to Alpha & Omega Semiconductor's EZBuck family of easy-to-use synchronous buck regulators. This series is designed for point-of-load conversion in portable and stationary electronic devices. The DI-1 designation typically refers to the specific package configuration, often associated with the DFN-8 form factor, distinct from other variants like the SO-8 package.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.