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AM4963 (Not Recommended for new design)

NRND = Not Recommended for New Design

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The AM4963/AM4963R is a full wave driver IC with direct PWM control function and thermal resistor control function. It is used for single phase motor and is capable of speed control by PWM pulse and thermal resistor at the same time.


  • The Motor Speed is Control°C by PWM Pulse Directly and Thermal Resistor at the Same Time
  • Low Corner Temperature (30°C) Adjustable
  • High Corner Temperature (38°C) Adjustable
  • Full Speed when Thermal Resistor Shorten
  • Built-in Triangle Wave Circuit without Extra Oscillation Capacitor
  • Built-in Minimal Speed Setup Circuit
  • Alpha Slope Adjustable
  • Rotation Speed Indicator (FG)
  • Rotation/lock State Indicator (RD)
  • Built-in Temperature Control Circuit
  • Built-in Thermal Shutdown Circuit
  • Lock Protection and Auto-restart
  • Application(s)

  • CPU Cooler Fan in PC
  • Brushless DC Motor Driver
  • Product Specifications

    Product Parameters

    Average OutputDrive Current (mA) -
    Frequency Generator (FG) and Rotation Detect FG
    Hall Bias Voltage (V) -
    Lock Detect, Shut-Down and Auto Start Yes
    Minimum Speed Setting Yes
    Operating Ambient Temperature (°C) -30 to 90
    Operating Voltage (V) 3.5 to 16
    Other Protection Features Thermal Shutdown
    Peak Output Current (mA) 1000
    Reference Voltage Output (V) -
    Speed Control PWM +Temp or VDD and Slope Adjust
    Speed Control Slope Adjust Yes
    SupplyCurrent (mA) 8

    Related Content

    Quality Documentation

    Technical Documents

    Recommended Soldering Techniques


    Product Change Notices (PCNs)

    A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

    PCN # Issue Date Implementation Date Subject
    PCN-2672 2024-03-11 2024-09-07 Device End of Life (EOL)