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Product Detailed Parameters
- Description：IC MOTOR DRIVER 3V-5.5V 8MSOP
- Series：FanSense™
- Mfr：Microchip Technology
- Package：Tube
- Motor Type - Stepper：-
- Motor Type - AC, DC：Brushless DC (BLDC)
- Function：Controller - Speed
- Output Configuration：Pre-Driver - Low Side
- Interface：Parallel
- Technology：-
- Step Resolution：-
- Applications：Fan Controller
- Current - Output：-
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：-
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
- Grade：-
- Qualification：-
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Overview
The TC647EUA is a switch-mode fan speed controller designed for brushless DC motors, manufactured by Microchip Technology. It utilizes pulse width modulation (PWM) to achieve temperature-proportional speed control, accepting input from a thermistor or voltage-output sensor. The device operates within a supply voltage range of 3.0V to 5.5V and features an integrated startup timer for reliable motor initialization. It includes FanSense technology for fault detection and supports shutdown modes for power efficiency. The component is housed in an MSOP-8 surface-mount package.
Feature Summary
- Temperature-proportional fan speed control via PWM using external thermistor inputs
- Integrated FanSense technology for monitoring fan operation and detecting faults
- Built-in startup timer ensures reliable motor starting under various conditions
- Shutdown mode capability supports system power management and green applications
Applications
- Speed control for brushless DC fans in electronic systems
- Thermal management circuits requiring acoustic noise reduction
- Systems utilizing NTC or PTC thermistors for temperature sensing
- Applications requiring fan failure detection and protection
Procurement Notes
Verify the specific suffix 'EUA' against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with the required thermistor interface and PWM frequency specifications. Check for any recent product discontinuation notices or lifecycle changes before finalizing procurement plans.
Selection Notes
Select this component when temperature-dependent fan speed regulation is required for brushless DC motors. It is suitable for designs prioritizing low cost and simplified circuitry using standard thermistors. Consider the MSOP-8 package constraints and the specific operating voltage range requirements of the target application.
Part Context
The TC647 series belongs to Microchip's family of fan and motor controllers. These devices are categorized under Power Management ICs (PMIC). The TC647EUA specifically denotes the commercial temperature range variant in the MSOP-8 package, distinguishing it from industrial variants or other package options like SOIC or PDIP.
Replacement Considerations
Publicly confirmed substitute part numbers for the TC647EUA are not available in the provided documentation. Users should consult official Microchip resources for potential obsolescence alternatives.
