TC649EOA Power Management ICs - PMIC by Microchip Technology

Status: Active
Series: TC649
RoHS: Compliant
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The TC649 is a switch mode fan speed controller for use with brushless DC motors. Temperature proportional speed control is accomplished using pulse width modulation(PWM). 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. The TC649 automatically suspends fan operation when measured temperature (VIN) is below a user-programmed minimum setting (VAS). An integrated Start-Up Timer ensures reliable motor start-up at turn-on, coming out of Shutdown Mode, or following a transient fault. In normal fan operation, a pulse train is present at SENSE, Pin 5. A Missing-pulse Detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC649 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. See the Applications section for more information and system design guidelines. The TC649 is packaged in a space-saving 8-Pin PDIP, MSOP or a SOIC package and is available in the industrial temperature range.

Prices starting from US$1.02


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Logo for Microchip Technology Microchip Technology US$1.49
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Logo for Newark Electronics Newark Electronics US$2.06
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Logo for Future Electronics Future Electronics US$1.67
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Logo for Avnet America Avnet America US$2.06
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Logo for RS Americas RS Americas US$3.58
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Logo for element14 element14 US$1.87
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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!
Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
Automatic 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 True
Fan Sense True
External Temp Input False
Auto Shutdown True
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 | SOIC
Temp Range -40C to +85C
Packing Media Tube (100)

Resources

Data Sheets
TC649 Datasheet




Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.078
Shipping Weight (kg) 0.25
Lead Count 8
Package Type SOIC
Package Width or Size .150In(3.90mm)
Soldering Composition Matte Tin

Alternative Descriptions

PWM FAN SPEED CONTROLLER WITH FANSENSE | Microchip Technology
Motor Driver, Pwm, 5Ma, Soic-8 | Newark Electronics
TC649 Series 3 to 5.5 V Surface Mount PWM Fan Speed Controller - SOIC-8 | Future Electronics
PWM Fan Motor Speed Controller 8-Pin SOIC N Tube | Avnet America
Microchip TC649EOA PWM Controller, 34 Hz, 3 - 5.5 V, 8-Pin SOIC | Microchip Technology Inc. TC649EOA | RS Americas
PWM, FAN SPEED, CNTRL, SD, 8-SOIC | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a TC649EOA?

Additional datasheets, footprints and schematics for TC649EOA are listed on our Part Details page. You can also find images and similar parts to TC649EOA on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for TC649EOA on our Product Comparison page. Access via the 'View Pricing & Stock' button to view TC649EOA price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does TC649EOA fall under?

The TC649EOA 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 TC649EOA 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 TC649EOA you can contact the distributor directly for product support, shipping queries etc.

Is the TC649EOA RoHS compliant?

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

Which authorised distributors for TC649EOA have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics, Avnet America and RS Americas have stock available or on a lead time for TC649EOA.

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