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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 200

On Order: 0
Factory Stock:Factory Stock: 1,600
Factory Lead Time: 8 Weeks
Minimum Order: 100
Multiple Of: 100
Quantity Web Price
100+ $1.00


Attributes Table
Supply Current-Max 1mA
Supply Voltage 3V to 5.5V
Frequency-Max 34Hz
Input Voltage 5.8V
Duty Cycle-Min 0%
Duty Cycle-Max 100%
Operating Temp Range 0°C to 85°C
Storage Temperature Range -65°C to +150°C
Output Current 5mA
Thermal Resistance 155°C/W
Features and Applications

The TC647VOA is a 5.5 V and 34 Hz PWM Fan Speed Controller with FanSense Technology for use with Brushless DC Fans, available in SOIC-8 Package.


  • Temperature Proportional Fan Speed for Acoustic Control and Longer Fan Life
  • Efficient PWM Fan Drive
  • 3.0V to 5.5 V Supply Range:
    • Fan Voltage Independent of TC647  Supply Voltage
    • Supports any Fan Voltage
  • FanSense™ Fault Detection Circuits Protect Against Fan Failure and Aid System Testing
  • Shutdown Mode for "Green" Systems
  • Supports Low Cost NTC/PTC Thermistors
  • Space Saving 8-Pin MSOP Package


  • Power Supplies
  • Personal Computers
  • File Servers
  • Telecom Equipment
  • UPSs, Power Amps, etc.
  • General Purpose Fan Speed Control