Single-Phase, BLDC, Motor Driver with Integrated Hall Sensor in a TSOT23-6 Package

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The MP6517A and MP6517B are single-phase, brushless, DC motor drivers with integrated power MOSFETs and a Hall effect sensor. The MP6517A/MP6517B drives single-phase brushless DC fan motors with up to 2A of output current limit. The IC has a 3.3V to 16V input voltage range and input line reverse voltage protection to save the external diode on the supply line.
The MP6517A/MP6517B controls the rotational speed through the PWM signal on the PWM pin. The MP6517A/MP6517B has a rotational speed detection feature and rotor lock fault indication on FG/RD with an open-drain collector output. The output speed versus the input duty curve can be programmed easily for flexible use. To reduce fan driver audible noise and power loss, the MP6517A/MP6517B features a soft on/off phase transition and automatic phase-lock function of the motor winding BEMF and current.
Full protection features include input over-voltage protection (OVP), under-voltage lockout (UVLO), rotor deadlock protection, thermal shutdown, and input reverse protection.
The MP6517A/MP6517B requires a minimal number of external components to save solution cost. The MP6517A/MP6517B is available in TSOT23-6-L, TSOT23-6-R, TSOT23-6-SL, and TSOT23-6-RSL packages.


  • Embedded Hall Sensor with High Sensitivity
  • Wide 3.3V to 16V Operating Input Range
  • Up to 2A Programmable Current Limit
  • Integrated Power MOSFETs: Total 850mΩ (HS + LS)
  • Programmable Speed Curve
  • Built-In Adjustable Speed Curve Corner Setting
  • Automatic Phase Lock Detection of Winding BEMF and Current Zero-Crossing
  • Soft On/Off Phase Transition
  • Rotational Speed Indicator (FG) Signal 
  • 12kHz to 48kHz PWM Input Frequency Range
  • Fixed 26kHz Output Switching Frequency
  • Input Line Reverse Voltage Protection (RVP)
  • Rotor Deadlock (RD) Protection and Automatic Recovery
  • Thermal Protection and Automatic Recovery
  • Built-In Input OVP, UVLO, and Automatic Recovery 
  • MP6517A Supports Standby Mode
  • Available in TSOT23-6-L, TSOT23-6-R, TSOT23-6-SL, and TSOT23-6-RSL Packages


  • Number of Half-Bridges2
  • Hall InputYes
  • GradeCatalog
  • Iout (max) (A)2
  • Vin (max) (V)16
  • Vin (min) (V)3.3
  • PackageTSOT23-6-L, TSOT23-6-R, TSOT23-6-RSL, TSOT23-6-SL