TC78S121 PWM Dual-Stepping Motor Drivers
Toshiba TC78S121 PWM Dual-Stepping Motor Drivers are chopper type dual-stepping motor drivers that can drive up to four brushed DC motors. The drivers incorporate two pairs of H-bridge drivers, and can drive two DC motors or a single stepping motor. The IC incorporates the VCC regulator for internal circuit operation, so an external power supply (5V) is not required.
