TC647EUATR

Overview

The TC647EUATR is a switch-mode fan speed controller designed for brushless DC motors, manufactured by Microchip Technology. It operates within a supply voltage range of 3 V to 5.5 V and consumes 200 uA of quiescent current. The device utilizes pulse width modulation (PWM) for temperature-proportional speed control, accepting input from thermistors or voltage-output sensors. It features FanSense™ technology for fault detection and includes an integrated start-up timer. The component is housed in an MSOP-8 package and supports operation across temperatures from -40°C to +85°C.

Feature Summary

• Temperature proportional fan speed control using PWM
• FanSense™ fault detection circuitry for system reliability
• Integrated start-up timer for reliable motor initialization
• Shutdown mode support for energy efficiency

Applications

• Brushless DC motor speed control
• Thermistor-based thermal management systems
• Acoustic control applications requiring variable fan speeds

Procurement Notes

Verify the specific suffix 'E' corresponds to the industrial temperature range (-40°C to +85°C) and MSOP-8 package configuration as defined in the official datasheet. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure ordering quantities align with standard reel packaging specifications provided by the manufacturer.

Selection Notes

Select this component when designing systems requiring precise thermal regulation of brushless DC fans. The TC647EUATR is suitable for applications needing low quiescent current and robust fault detection capabilities. Consider the MSOP-8 footprint constraints and the requirement for external thermistor inputs when evaluating alternative packages or series members.

Part Context

The TC647EUATR belongs to the TC647 series of fan controllers from Microchip Technology. This series focuses on providing efficient, cost-effective solutions for managing cooling fans in electronic equipment. The EUATR variant specifically denotes the industrial temperature grade and surface-mount packaging, distinguishing it from commercial variants or through-hole options within the same functional family.

Replacement Considerations

TC647VOATR is a documented parameter-equivalent part number.