The NJW4303 is a 3-Phase Brushless DC Motor Control pre-driver IC with PWM control designed by New Japan Radio Co. Ltd. NJW4303 generates the most optimal current flow patterns by receiving rotor magnetic pole detection signals from hall elements of 3-phase brushless motor.
The NJW4303 operates from a wide range input voltage from 9.0V up to 35V( the maximum voltage supported by NJW4303 is 40V), and it fits for a 12V/24V power supply. The NJW4303 offers possibility to use speed control by internal oscillation circuit, and torque limiter control by current sensory circuit. The application of NJW4303 is very easy to design and requiring few external components and offering many features like :maximum supply voltage : 40V , operating voltage : 9 V to 35V , 3-Phase Full-Wave PWM Predriver ( Hi-side: Pch-FET/ Low-side: Nch-FET) , low-side gate voltage clamp (Gate Voltage=18V max.) , internal PWM oscillation circuit (frequency setting by external capacitor) , current protection circuit , low-voltage protection circuit , forward/reverse direction , controllable dead-time settings , soft-start Function , ON/OFF function , brake function , lock protection system , thermal shutdown circuit .