MAX6616AEG+

Thermal Management Overview

The MAX6616AEG+ is a dual-channel temperature monitor and fan-speed controller manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 3.0V to 5.5V and consumes 500µA of typical supply current. The device monitors two temperature channels, either the internal die temperature or external thermistors, using an integrated averaging ADC with a conversion time of 250ms. It features a 2-wire SMBus/I²C-compatible serial interface for register access and supports nine pin-programmable slave addresses. The unit includes six general-purpose I/Os (GPIOs), two open-drain PWM outputs for fan control, and dedicated alarm outputs.

Thermal Management Feature Summary

• Dual-channel temperature monitoring capability supporting both local die sensors and external thermistor inputs.
• Integrated PWM generation and tachometer counting functions for automated cooling fan speed regulation and failure detection.
• SMBus digital interface enabling programmable alarm thresholds, interrupt generation, and system throttling signals.
• Six configurable GPIO pins providing additional system flexibility and state management capabilities.

Thermal Management Applications

• Desktop computers
• Servers
• Power supplies
• Networking equipment
• Workstations

Thermal Management Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 24-pin QSOP specification. Ensure compatibility with existing SMBbus addressing configurations on the target motherboard. Review datasheet revisions for any updates to electrical characteristics or thermal derating curves prior to final integration.

Thermal Management Selection Notes

Select this component when dual-channel thermal management with active fan control is required. The MAX6616 offers distinct advantages over the MAX6615 due to its expanded GPIO count and larger package footprint. Evaluate system power constraints against the 500µA operating current. Ensure the design accommodates the 24-pin QSOP form factor and provides adequate PCB space for associated thermistor networks and pull-up resistors.

Thermal Management Part Context

This part belongs to the MAX6615/MAX6616 family of hardware monitors designed for thermal management in computing systems. While the MAX6615 utilizes a 16-pin QSOP package, the MAX6616 expands functionality with a 24-pin QSOP housing and additional GPIO resources. Both variants share identical core monitoring and SMBus interface specifications, allowing for flexible design scaling based on channel requirements.

Thermal Management Replacement Considerations

MAX6615AEE+