Diodes Incorporated
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ZXBM1004 (Not Recommended for new design)

NRND = Not Recommended for New Design

Single Phase BLDC Fan and Motor Pre-Driver

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The ZXBM1004 is a single-phase, DC brushless motor pre-driver with PWM variable speed control suitable for fan and blower motors. The controller is intended for applications where the fan or blower speed is control°C by an external PWM signal, thermistor or DC voltage.


  • Compliant with external PWM speed control
  • Compliant with thermistor control
  • Minimum speed setting
  • Low noise
  • Auto restart
  • Built in hall amplifier
  • Speed pulse (FG) and lock rotor (RD) outputs
  • Up to 18V input voltage (60V with external regulator)
  • QSOP16 package
  • Application(s)

  • Mainframe and personal computer fans and blowers
  • Instrumentation fans
  • Central heating blowers
  • Automotive climate control
  • Product Specifications

    Product Parameters

    Adjustable Current Limit -
    Frequency Generator (FG) and Rotation Detect FG and RD
    Hall Bias Voltage (V) -
    High Side Switch Drive Sink Current (mA) 100
    Lock Detect, Shut-Down and Auto Start Yes
    Low Side Switch Drive Source Current (mA) 80
    Minimum Speed Setting -
    Operating Ambient Temperature (°C) -40 to 110
    Operating Voltage (V) 4.7 to 18
    Reference Voltage Output (V) 3
    Speed Control VSPD or PWM
    SupplyCurrent (mA) 6
    Tail End Current Control -

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