AOZ1267QI-02_3

Overview

The AOZ1267QI-02 is a synchronous step-down DC-DC converter from the EZBuck family, designed for high-efficiency power management. It integrates high-side and low-side N-channel MOSFETs to deliver an output current of 8A. The device supports an input voltage range up to 24V and features adjustable output voltages via an external resistor divider. Key operational parameters include a switching frequency range typically spanning 300kHz to 1.5MHz, ensuring compact passive component sizing. It operates within a junction temperature range of -40°C to +125°C and is housed in a compact 10-DFN package.

Feature Summary

• Integrated synchronous rectification with internal high-side and low-side N-channel MOSFETs for enhanced efficiency.
• Fixed internal switching frequency eliminates the need for external compensation components.
• Built-in protection mechanisms including over-current protection, thermal shutdown, and undervoltage lockout.
• Adjustable soft-start time to limit inrush current during startup.

Applications

• Point-of-load (POL) regulation for industrial equipment
• Power supply stages for consumer electronics
• Voltage regulation for communication infrastructure
• Battery-powered portable devices requiring efficient step-down conversion

Procurement Notes

Verify the specific suffix '02' against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure that the required output voltage setting aligns with the fixed feedback reference voltage defined in the official documentation. Confirm package marking codes match the intended application requirements before finalizing procurement orders.

Selection Notes

Select this component when an 8A continuous output current is required from an input source up to 24V. The integrated nature of the controller and power stage simplifies design complexity compared to discrete solutions. Consider the thermal performance of the DFN package relative to the PCB copper area available for heat dissipation under maximum load conditions.

Part Context

This part belongs to Alpha & Omega Semiconductor's EZBuck series, which focuses on simplified design through integrated control loops. The AOZ1267QI-02 represents a specific variant optimized for 24V input applications, distinguishing it from other members of the family that may support higher input voltages or different current ratings.

Replacement Considerations

Direct replacements within the same EZBuck family include the AOZ1267QI-01, which shares similar characteristics but may differ in input voltage rating or packaging details. Always cross-reference the mechanical dimensions and electrical parameters with the target application requirements before substituting.