TC647EUA Power Management ICs - PMIC by Microchip Technology


The TC647 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation. A thermistor (or other voltage output temperature sensor) connected to VIN furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. Minimum fan speed is set by a simple resistor divider on the VMIN input. An integrated Start-up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. A logic low applied to VMIN, Pin 3, causes fan shutdown. The TC647 also features Microchip Technology's proprietary FanSenseâ„¢ â„¢ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE, Pin 5, indicating normal operation. A Missing-pulse Detector monitors this pin during normal fan operation. A stalled, open, or unconnected fan causes the TC647 to trigger its start-up timer once. If the fault persists, the FAULT output goes low, and the device is latched in its Shutdown Mode. The TC647 is available in a standard 8-Pin PDIP, MSOP and SOIC packages. Commercial and industrial temperature ranges are available in both package options.

Where to Buy

Prices starting from US$0.94

Distributor Stock
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Farnell
from US$0.94
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Newark Electronics
from US$1.58
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Avnet America
from US$1.90
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Microchip Technology
from US$1.39
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RS Americas
from US$2.64
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element14
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Avnet Silica
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Features

Temperature Proportional
Fan Speed for Acoustic Control and Longer Fan Life
Efficient PWM Fan Drive
3.0V to 5.5V Supply Range
Supports Any Fan Voltage!
FanSenseâ„¢Fault Detection Circuits Protect Against Fan Failure and Aid
System Testing
Shutdown Mode for "Green" Systems
Supports Low Cost NTC/PTC Thermistors

Specifications

Device Description Fan Manager
Typical Accuracy (°C) Depends on external thermistor
Over Temp Alert False
SM Bus False
Predictive Fan Fault False
Max. Supply Current (µA) 1000
Max Accuracy @ 25°C (°C) Depends on external thermistor
Integrated temp Sensor False
Fan Sense True
External Temp Input True
Auto Shutdown False
PWMFreq Low
FanSpeedTable No
Temp. Range Max. (°C) +85
Temp. Range. Min. (°C) -40
Vcc Range Max. (V) +5.5
Vcc Range Min. (V) +3.0
Pins | Packaging 8 | MSOP
Temp Range -40C to +85C
Packing Media Tube (100)

Resources

Data Sheets
TC647 Datasheet




Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0256
Shipping Weight (kg) 0.07
Lead Count 8
Package Type MSOP
Package Width or Size 3x3mm
Soldering Composition Matte Tin

Alternative Descriptions

Motor Driver, Pwm, 5Ma, Msop-8 | Newark Electronics
PWM Fan Motor Speed Controller 8-Pin MSOP Tube | Avnet America
PWM FAN SPEED CONTROLLER WITH FANSENSE | Microchip Technology
Microchip TC647EUA Fan Controller IC, 5 V, 8-Pin MSOP | Microchip Technology Inc. TC647EUA | RS Americas
IC, PWM, FAN SPEED CNTRL, 8-MSOP | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a TC647EUA?

Additional datasheets, footprints and schematics for TC647EUA are listed on our Part Details page. You can also find images and similar parts to TC647EUA on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for TC647EUA on our Product Comparison page. Access via the 'View Pricing & Stock' button to view TC647EUA price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does TC647EUA fall under?

The TC647EUA is listed under Semiconductors - ICs > Power Management ICs - PMIC > Drivers & Controllers > Motor Drivers / Controllers.

Can I view similar or alternative parts?

You can view similar parts to TC647EUA when available in the Motor Drivers / Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the TC647EUA you can contact the distributor directly for product support, shipping queries etc.

Is the TC647EUA RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for TC647EUA have stock available?

Authorised distributors including Newark Electronics, Avnet America, Microchip Technology, RS Americas and element14 have stock available or on a lead time for TC647EUA.

How do I check stock and lead times for all distributors?

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