AOZ1036PI_2#A

Overview

The AOZ1036PI_2#A is a synchronous buck regulator from the EZBuck series by Alpha & Omega Semiconductor. It operates with an input voltage range of 4.5V to 18V and delivers up to 5A of continuous output current. The output voltage is adjustable down to 0.8V. Key electrical parameters include internal high-side and low-side switches with resistances of 55mΩ and 19mΩ respectively, and a fixed PWM switching frequency of 500kHz. The device supports cycle-by-cycle current limit, pre-bias start-up, short-circuit protection, and thermal shutdown. It is rated for ambient temperatures between -40°C and +85°C.

Feature Summary

• Integrated synchronous buck topology with low on-resistance internal switches for high efficiency
• Fixed 500kHz PWM operation ensures consistent timing without external clock components
• Comprehensive protection suite including cycle-by-cycle current limit, thermal shutdown, and short-circuit protection

Applications

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

Procurement Notes

Verify the specific suffix against official Alpha & Omega Semiconductor documentation to confirm pinout compatibility and functional equivalence. Confirm package type matches the required SO-8 footprint. Check product lifecycle status as availability may vary. Ensure environmental compliance requirements are met for the intended deployment.

Selection Notes

Select this component when a compact, non-synchronous or synchronous solution is needed for 5A loads within an 18V input limit. The fixed 500kHz frequency simplifies filter design compared to variable frequency alternatives. Consider the exposed pad thermal performance for high-current applications in constrained spaces.

Part Context

This part belongs to the EZBuck family of easy-to-use synchronous buck regulators. It is designed to replace discrete MOSFET solutions or older asynchronous regulators in space-constrained consumer electronics. The PI suffix indicates the SO-8 package variant, distinguishing it from the DFN versions within the same electrical specification family.

Replacement Considerations

Direct replacements include AOZ1036DI (DFN-8 package) for identical electrical performance in a different form factor. Verify that any substitute maintains the 5A current rating and 500kHz switching frequency to ensure circuit stability.