AOZ1036DI

Overview

The AOZ1036DI is a high-efficiency synchronous buck regulator from the EZBuck series by Alpha & Omega Semiconductor. It operates within an input voltage range of 4.5V to 18V and delivers up to 5A of continuous output current, with adjustable output down to 0.8V. The device features a fixed 500kHz PWM switching frequency and integrates internal high-side (55mΩ) and low-side (19mΩ) switches. Packaged in a thermally enhanced 5x4 DFN-8 with an exposed pad, it supports operation across a -40°C to +85°C ambient temperature range.

Feature Summary

• Integrates synchronous rectification with low on-resistance internal switches for high efficiency
• Includes built-in protection mechanisms such as thermal shutdown, short-circuit protection, and cycle-by-cycle current limit
• Features internal soft start and pre-bias startup capability to ensure stable power-up sequences

Applications

• Point-of-load DC/DC converters
• LCD TV systems
• Set-top boxes
• DVD and Blu-ray players/recorders
• Cable modems

Procurement Notes

Verify component authenticity through authorized distribution channels due to potential counterfeit risks. Confirm package integrity and pin alignment against the 5x4 DFN-8 specification. Check manufacturing date codes and lot traceability records. Ensure storage conditions comply with moisture sensitivity level requirements prior to soldering. Validate supplier documentation matches the specific AOZ1036DI part number variant.

Selection Notes

Select this component for applications requiring compact synchronous buck regulation with integrated protection. The 500kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure input voltage stays within the 4.5V to 18V range. Verify thermal design accommodates the exposed pad for adequate heat dissipation at full 5A load. Consider the 0.8V minimum output voltage constraint for low-voltage logic supplies.

Part Context

The AOZ1036DI belongs to the EZBuck family of synchronous buck regulators designed for cost-effective and space-constrained power solutions. It shares architectural similarities with other devices in the series but is distinguished by its specific 5A current rating and 500kHz fixed frequency operation. The DI suffix denotes the 5x4 DFN-8 package variant, differentiating it from SO-8 versions like the AOZ1036PI.

Replacement Considerations

AOZ1036PI serves as a package-compatible alternative using an exposed pad SO-8 footprint.