MAX6620ATI+T

Overview

The MAX6620ATI+T is a quad linear fan speed controller manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single supply voltage ranging from 3 V to 5.5 V and draws a maximum power supply current of 250 µA. The device features an I²C-compatible serial interface for configuration and control. It is housed in a 28-lead Thin Quad Flatpack (TQFN) package measuring 5 mm x 5 mm with an exposed pad, designed for surface-mount installation.

Feature Summary

• Integrates four independent linear fan speed controllers within a single compact package
• Supports digital control via an I²C-compatible serial interface
• Includes built-in thermal shutdown protection for enhanced reliability

Applications

• Active cooling systems in computer motherboards
• Server and storage enclosure thermal management
• Consumer electronics requiring quiet fan operation

Procurement Notes

Verify the manufacturer part number against official Analog Devices documentation to confirm the specific suffix and package type. Ensure compatibility with the target system's I²C bus voltage levels and logic thresholds. Confirm that the required thermal dissipation capabilities align with the application's ambient temperature constraints before finalizing procurement.

Selection Notes

Select this component when a design requires multiple independently controlled fans with low noise and precise speed regulation. The I²C interface allows for dynamic adjustment without additional hardware complexity. Consider the TQFN package size and thermal performance relative to the available PCB area and heat dissipation requirements of the host system.

Part Context

This component belongs to the Maxim Integrated fan controller family, which specializes in low-noise, digitally controlled thermal management solutions. These devices are commonly used in applications where acoustic performance and precise temperature regulation are critical priorities over simple on/off switching mechanisms.

Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided source material.