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

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Top features

  • 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
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Two-coil fan driver (tachometer output) - US62

Product description

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

The Frequency Generator (FG) open-drain output makes the connectivity easier 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.

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