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US62   Two-Coil Fan Driver (Tachometer output)

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The US62 is a one-chip solution for driving two-coil brushless DC cooling fans.

Based on the advanced Melexis CMOS process, the IC contains a Hall-effect sensor, dynamic offset correction and low side output drivers.

The Frequency Generator open-drain output makes easier the connectivity with any external interface such as hardware monitoring or Super I/O IC.

These features are combined with the Melexis patented no-VDD design to fit the IC in a small 4-pin VK package.
 

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Features and Benefits

  • Low cost
  • High sensitivity Hall Sensor
  • Locked rotor protection and auto-restart
  • Power-efficient CMOS and power MOSFETs
  • Built-in output protection clamping diode
  • Integrated tachometer signal protected output
  • 2-coil fan driver with FG output in 4-pin VK package RoHS Compliant


Assets

Application Note
File Type
Size
Revision
Date
Action
Melexis Two Coil Fan Driver - Power Dissipation
PDF
256.7 KB
001
10/31/2007
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DataSheet
File Type
Size
Revision
Date
Action
US62/US63 DataSheet
PDF
405.1 KB
001
5/22/2006
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Reference
File Type
Size
Revision
Date
Action
BLDC Fan Motor Driver Quick Reference
PDF
385.8 KB
003
11/9/2007
edit
 
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