MAX1820YEUB

Overview

The MAX1820YEUB is a switching voltage regulator designed for WCDMA applications, functioning as a 600mA buck regulator. It operates with an input voltage range of 2.6V to 5.5V and provides an adjustable output voltage from 400mV to 3.4V. The device features a fixed switching frequency of 1MHz and delivers up to 600mA of output current. It is housed in a UMAX-10 package and supports operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated synchronous buck topology for high efficiency
• Fixed 1MHz switching frequency for compact external component size
• Current-mode control architecture for fast transient response

Applications

• WCDMA base station power supplies
• Portable communication equipment regulation
• General-purpose low-voltage DC-DC conversion

Procurement Notes

Verify the specific suffix (e.g., +T) against the datasheet to confirm tape-and-reel packaging versus tube configuration. Ensure the order matches the required operating temperature grade and package variant. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components or incorrect pinout assignments during procurement.

Selection Notes

Select this component when a compact, high-efficiency solution is required for WCDMA or similar mobile infrastructure applications. The fixed 1MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 600mA output limit and the 2.6V minimum input voltage to ensure compatibility with the system's power rail and load requirements.

Part Context

This part belongs to the MAX1820 family of switching regulators from Maxim Integrated, now part of Analog Devices. These devices are specifically optimized for wireless communication standards, offering a balance of performance and size. The YEUB designation indicates the specific package type and thermal characteristics suitable for surface-mount assembly in dense PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.