MAX31785AETL+T

Overview

The MAX31785AETL+T is a six-channel intelligent fan controller manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 2.7 V to 5.5 V and supports load voltages from 400 mV to 5.5 V. The device features an output current capability of 4 mA per channel and consumes a typical operating supply current of 3 mA. Designed for surface-mount installation, it is housed in a TQFN-EP-40 package. The component functions reliably across an extended temperature range, supporting minimum operating temperatures of -40°C and maximum operating temperatures of +85°C.

Feature Summary

• Integrates six independent channels for comprehensive multi-fan management
• Provides intelligent control capabilities for motor and motion applications
• Supports low-voltage operation with wide input voltage flexibility

Applications

• Multi-fan cooling systems in industrial equipment
• Motor control units requiring precise speed regulation
• Motion control interfaces in automation hardware

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this variant. Confirm that the A-grade designation aligns with required thermal performance specifications. Ensure compatibility with the TQFN-EP-40 footprint during PCB layout. Cross-reference the manufacturer's latest documentation to confirm active status and any potential obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring simultaneous control of multiple fans or motors. The integrated intelligence reduces external microcontroller burden. Consider the TQFN-EP-40 package size constraints against available board space. Evaluate the 4 mA output current against the specific load requirements of the target fans. Verify that the operating temperature range meets the environmental conditions of the intended deployment site.

Part Context

This part belongs to the MAX31785 series of intelligent fan controllers. It serves as a specialized power management IC designed for thermal management applications. The series provides a solution for managing complex cooling architectures without extensive discrete logic. It integrates driver circuitry with control logic to streamline system design.

Replacement Considerations

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