AOZ1073AIL-4_2

Overview

The AOZ1073AIL-4_2 is a synchronous high-efficiency buck regulator from the EZBuck family, manufactured by Alpha & Omega Semiconductor. It operates within an input voltage range of 4.5V to 16V and delivers up to 3A of continuous output current. The device features adjustable output voltage down to 0.8V and fixed 500kHz PWM switching frequency. Internal switches include an 85mΩ high-side and 30mΩ low-side MOSFET. Packaged in an SO-8 format, it supports operation across a -40°C to +85°C ambient temperature range.

Feature Summary

• Synchronous rectification with integrated high-side and low-side power switches
• Fixed 500kHz PWM switching frequency for optimized passive component size
• Comprehensive protection suite including thermal shutdown, short-circuit, and overvoltage protection

Applications

• Point-of-load DC/DC conversion
• PCIe graphics cards
• Set-top boxes and DVD drives
• LCD panels
• Telecom and networking equipment

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances or package variations. Ensure compatibility with existing PCB footprints and thermal management requirements. Confirm RoHS compliance status through current datasheets prior to integration into final designs.

Selection Notes

Select this component for applications requiring simple design implementation with high efficiency at moderate currents. The fixed 500kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 3A current limit and input voltage range when sizing external components for the target application load profile.

Part Context

This part belongs to the EZBuck series of synchronous buck regulators designed for simplicity and performance. It integrates control logic and power stages into a compact surface-mount package. The series targets cost-sensitive consumer and industrial electronics where board space and efficiency are critical constraints.

Replacement Considerations

Check for direct pin-compatible substitutes within the same manufacturer's portfolio that match the 3A current rating and 500kHz switching frequency. Verify equivalent internal resistance values and protection feature sets before substitution.