TC648EUA Power Management ICs - PMIC by Microchip Technology


The TC648 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 the VIN input furnishes the required control voltage of 1.25V to 2.65V(typical) for 0% to 100% PWM duty cycle. The TC648 can be configured to operate in either Auto-Shutdown or Minimum Speed mode. In Auto-Shutdown mode,fan operation is automatically suspended when measured temperature (VIN) is lower than a user-programmed minimum setting (VAS). The fan is automatically restarted and proportional speed control restored when VIN exceeds VAS (plus hysteresis). Operation in Minimum Speed mode is similar to Auto-Shutdown mode, except the fan is operated at a user-programmed minimum setting when measured temperature is low. An integrated Start-Up Timer ensures reliable motor start-up at turn-on, or when coming out of Shutdown mode. The over-temperature fault (OTF) is asserted when the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation. The TC648 is packaged in a space-saving 8-pin plastic DIP, MSOP or SOIC package and is available in the industrial temperature range.

Where to Buy

Prices starting from US$0.90

Distributor Stock
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Farnell
from US$0.90
No stock
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Microchip Technology
from US$1.33
25
in stock
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Newark Electronics
from US$1.53
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Avnet America
from US$1.86
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RS Americas
from US$2.56
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element14
from US$1.65
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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
Fan Voltage Independent of TC648 Supply Voltage - Supports Any Fan Voltage!
Over-Temperature Fault Detection
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 True
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 False
External Temp Input True
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 | MSOP
Temp Range -40C to +85C
Packing Media Tube (100)

Resources

Data Sheets
TC648 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

PWM FAN SPEED CONTROLLER WITH FANSENSE | Microchip Technology
Motor Driver, Dc Brushless, 5Ma, Msop-8 | Newark Electronics
PWM Fan Motor Speed Controller 8-Pin MSOP Tube | Avnet America
Microchip TC648EUA Fan Controller IC, 5 V, 8-Pin MSOP | Microchip Technology Inc. TC648EUA | RS Americas
IC, PWM, FAN SPEED CNTRL, 8-MSOP | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a TC648EUA?

Additional datasheets, footprints and schematics for TC648EUA are listed on our Part Details page. You can also find images and similar parts to TC648EUA on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for TC648EUA on our Product Comparison page. Access via the 'View Pricing & Stock' button to view TC648EUA price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does TC648EUA fall under?

The TC648EUA 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 TC648EUA 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 TC648EUA you can contact the distributor directly for product support, shipping queries etc.

Is the TC648EUA RoHS compliant?

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

Which authorised distributors for TC648EUA have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Avnet America, RS Americas and element14 have stock available or on a lead time for TC648EUA.

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

Stock availability and lead times will be displayed for TC648EUA often in real-time on the comparison pages.

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