The TB67S249, TB67S279, and TB67S289FTG are Toshiba's flagship stepper motor drivers, featuring breakthrough active gain control (AGC) technology. AGC dynamically boosts the stepper motor driving current overcoming heavy torque conditions and resuming normal in real-time and open-loop designs. AGC technology not only saves significant power in stepper motor control but also reduces or eliminates the complex and expensive closed-loop designs. These stepper motor drivers are also equipped with an advanced current detection system (ACDS) sense resistor-less feature that saves additional board space and BOM. The TB67S249, TB67S279, and TB67S289FTG are specified as 4.5 A, 2.0 A, and 3.0 A, respectively, with 10 V to 42 V motor operating voltage. They also have 32-step microstepping capability that makes them ideal for a wide range of industrial precision motor control applications.