AT8028

Overview

The AT8028 is a high-efficiency synchronous DC-DC step-down switching regulator manufactured by Analog Technologies, Inc. It delivers up to 1.5A of output current from an input voltage range of 2.6V to 5.5V. The device features an adjustable output voltage with a minimum setting of 0.6V and a maximum of 5.5V. Operating at a switching frequency of 2MHz, it utilizes a SOT23-5 surface-mount package. This buck converter topology provides a compact solution for power management applications requiring efficient voltage conversion.

Feature Summary

• High-efficiency synchronous step-down architecture
• Compact SOT23-5 surface-mount package design
• Adjustable output voltage capability

Applications

• Portable electronic devices
• Battery-powered systems
• General-purpose DC-DC conversion

Procurement Notes

Verify the manufacturer designation carefully, as the model number AT8028 is also associated with Analog Devices (LTM8028) and other entities like BL8028. Confirm that the supplier explicitly lists Analog Technologies, Inc. as the source. Request the specific datasheet from Analog Technologies to ensure the 2.6V-5.5V input range and 1.5A current rating match your requirements, distinguishing it from similar part numbers in the market.

Selection Notes

Select this component when a small form factor is critical due to its SOT23-5 packaging. It is suitable for applications where the input supply does not exceed 5.5V. The 2MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Ensure the thermal environment supports the power dissipation expected from a 1.5A output in this small package.

Part Context

This component belongs to the family of synchronous buck converters designed for space-constrained environments. Analog Technologies, Inc. positions this device within their portfolio of simple, efficient DC-to-DC solutions. It serves as a dedicated voltage regulator for low-voltage digital circuits and analog loads requiring stable power delivery from single-cell or dual-cell battery sources.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official distributor databases for cross-references, ensuring compatibility with the 2.6V-5.5V input range and 1.5A output current specifications.