This IC integrates all components to control and drive a small BLDC fan or pump in a standalone application with minimum external component effort.


  • IC for standalone PMSM applications
  • Internal power bridge up to 500mA(rms)
  • Selectable PWM speed and error interface or analog speed interface
  • Tacho output
  • Current controlled start up
  • Integrated configurable error handling
  • Blockage detection
  • Automatic restart and rotor delocking
  • Speed or current control
  • Windmill functions
  • Safety functions for overtemperature, over-/undervoltage, overcurrent and short circuit


Free Download

File Description Type
Info Sheet PDF 341 kB
Product Flyer BLDC Motor Control PDF 3,3 MB

On Request

File Description
E523.81 | Data Sheet
E523.81 | Errata Sheet

Application Diagram


  • Small PMSM / BLDC FANs
  • Small PMSM / BLDC Pumps

Ordering Information

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Part No. Temp. Range Package Order No.
E523.81 -40°C to + 170°C QFN20L5 E52381A62C
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