AOZ1267QI-01

Overview

The AOZ1267QI-01 is a synchronous step-down DC-DC converter from Alpha & Omega Semiconductor, classified under the EZBuck series. It integrates high-side and low-side power MOSFETs to deliver an output current of 8A with a maximum input voltage rating of 28V. The device utilizes fixed-frequency pulse-width modulation (PWM) control for stable regulation. It is housed in a compact 15-lead QFN package designed for efficient thermal dissipation and space-constrained applications.

Feature Summary

• Integrated synchronous rectification combining driver and power stages
• Fixed internal switching frequency simplifies external component selection
• Built-in protection mechanisms including overcurrent and thermal shutdown

Applications

• Point-of-load regulation for industrial equipment
• Power supply stages for consumer electronics
• Battery-powered portable devices requiring efficient voltage conversion

Procurement Notes

Verify the specific suffix '01' against the manufacturer's latest datasheet to confirm pinout and electrical specifications. Ensure compatibility with RoHS3 standards if required by your assembly process. Confirm that the 15-QFN package dimensions match your PCB footprint exactly before finalizing procurement.

Selection Notes

Select this component when an 8A continuous output current is required within a 28V input limit. The integrated design reduces bill of materials count compared to discrete solutions. Evaluate thermal performance requirements based on ambient temperature and load conditions to ensure adequate heat sinking or copper area on the PCB.

Part Context

This part belongs to the EZBuck family of synchronous buck regulators. These components are engineered for high efficiency and small solution size. They target applications needing reliable voltage regulation without complex external control loops, leveraging internal compensation and drive circuits.

Replacement Considerations

Check for direct replacements within the same EZBuck series, such as variants with different fixed output voltages or slight current adjustments. Verify that any substitute maintains the 28V input rating and 15-QFN package form factor to ensure mechanical interchangeability.