AOZ3103DI_2

Voltage Regulators - DC DC Switching Regulators Overview

The AOZ3103DI_2 is a 3A synchronous EZBuck regulator manufactured by Alpha & Omega Semiconductor Inc. It integrates high-side and low-side power MOSFETs with a control circuit to provide a regulated output voltage from an input supply range of 4.5V to 28V. The device operates at a fixed switching frequency of 1.2MHz, enabling the use of small external inductors and capacitors. It features adjustable output voltage via external resistors, internal soft-start, and comprehensive protection mechanisms including over-current, over-temperature, and under-voltage lockout.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous rectification for high efficiency
• Fixed 1.2MHz switching frequency reduces component size
• Includes internal soft-start and current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Industrial control power supplies
• Telecommunications equipment biasing

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix DI_2 against the manufacturer datasheet to confirm pinout and thermal pad configuration. Confirm RoHS compliance status as per the latest production change notice. Ensure the ordering part number matches the required package variant to avoid integration errors during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for 3A loads with input voltages up to 28V. The fixed 1.2MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Evaluate thermal performance based on the expected ambient temperature and PCB copper area, as the integrated MOSFETs generate significant heat under high load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the EZBuck family of synchronous buck regulators from Alpha & Omega Semiconductor. These devices are designed to simplify power supply design by integrating the controller and power stage into a single package. The family targets applications requiring efficient, space-constrained power conversion solutions for portable and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin compatible alternatives within the same EZBuck series or other manufacturers' 3A synchronous buck regulators. Verify that replacement parts support the same input voltage range and switching frequency to ensure compatibility with existing passive components and control loops.