NJW4303 Series
PWM Three-Phase DC Brushless Motor Controller

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  • Description

    The NJW4303 is a 3-Phase Brushless DC Motor Control pre-driver IC with PWM control. It generates the most optimal current flow patterns by receiving rotor magnetic pole detection signals from hall elements of 3-phase brushless motor.Operational voltage range for the IC has margin as 9.0V to35V(maximum voltage of 40V), and it fits for a 12V/24V power supply. It is possible to put practical use such as speed control by internal oscillation circuit, and torque limiter control by current sensory circuit. With NJW4303, high reliability of various motor drive controls can be realized by a variety of function and a substantial protection circuit.

  • Spec
    Supply Voltage 9V to 35V
    Absolute Maximum Rating 40V
    Phase Input 2In×3
    Output Drive Mode 120°Square Wave
    Structure Bi-CDMOS Technology
    Wide Operating Temperature -40℃ to +85℃
    Junction Temp. +150℃
    Package SSOP32
    3-Phase Full-Wave PWM Predriver Hi-side:Pch-FET/ Low-side: Nch-FET
    Low-side Gate Voltage Clamp Gate Voltage=18V max.
    Note Internal PWM Oscillation Circuit (Frequency Setting by External Capacitor)
    Current Protection Circuit (Current limit=0.25V±10%)
    Low-Voltage Protection Circuit
    Forward/Reverse Direction (Changeable while Rotating ,Controllable Dead-Time Settings)
    Soft-Start Function (Using External Capacitor)
    ON/OFF Function (Stop with S/S Pin)
    Brake Function
    Lock Protection System
    Thermal Shutdown Circuit
    120°/60°Phase Difference Change Function
    Multi-FG Output (2bit Input Change Type)
  • Technical
  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Download Datasheet

Functional Description

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