AOZ1034DI#A

Overview

The AOZ1034DI#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 4A continuous output current. The output voltage is adjustable down to 0.8V. Key electrical parameters include a fixed switching frequency of 500kHz, internal high-side switch resistance of 60mΩ, and low-side switch resistance of 20mΩ. The device features cycle-by-cycle current limit, thermal shutdown, and short-circuit protection. It is housed in a thermally enhanced 8-VDFN package with an exposed pad.

Feature Summary

• Synchronous rectification architecture for high efficiency
• Integrated soft start and pre-bias startup capability
• Comprehensive protection including thermal shutdown and short-circuit protection

Applications

• Point-of-load regulation for embedded systems
• Battery-powered portable devices
• Industrial control power supplies

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches the 8-VDFN specification. Check datasheet revisions for any design changes. Ensure storage conditions comply with moisture sensitivity level requirements. Validate supplier documentation against official manufacturer records.

Selection Notes

Select this component when a compact synchronous buck solution is required for 4A loads. Consider the 500kHz switching frequency for passive size optimization. Evaluate thermal performance given the DFN package constraints. Compare efficiency curves at specific load points against alternative regulators.

Part Context

Part of the EZBuck family designed for simple, high-efficiency DC-DC conversion. The DI suffix indicates the 8-VDFN package variant. This series targets applications requiring minimal external components while maintaining robust protection features.

Replacement Considerations

AOZ1034DI is a direct pin-compatible alternative within the same series.