The SCM1243MF is a Motor Driver DIP-33 chip manufactured by Sanken, conforming to RoHS standards. It is a single-chip four-phase brushless DC motor driver with a built-in Hall-effect current-detecting circuit. It is capable of driving three-phase brushless DC motors with a wide range of power supplies. The SCM1243MF also features over-current protection, under-voltage lockout, and a built-in speed and torque controls. It has a built-in power MOSFETs with various current capability depending on the voltage supplied, and can be used with PWM-type speed control signals. This chip is suitable for a variety of applications, including mobile robots, cooling fans, DVD drives, and other DC motor-driven devices.