Bipolar stepper driver with 4.5 A output and wide voltage range
The TB67S249FTG,EL is a fully integrated bipolar stepper motor driver from Toshiba Semiconductor, combining the control logic and power MOSFET output stage in a single 48-VFQFN package with exposed pad for thermal dissipation. It drives one bipolar stepper motor with a rated output current of 4.5 A and accepts a motor supply voltage from 10 V to 47 V, making it suitable for medium-torque motion axes in pick-and-place machines, labelers, and 3D printers.
Microstepping resolution down to 1/32 step
Step resolution is programmable from full-step down to 1/32 microstepping, allowing smooth motion and reduced low-speed vibration compared to full-step drives. The half-bridge (8) output configuration handles bidirectional current through each motor phase, and the Power MOSFET technology keeps conduction losses low at the 4.5 A maximum. Operating temperature range is -20°C to 85°C ambient — this is an industrial grade, not extended automotive, so it fits production-floor enclosures but not under-hood or -40°C cold-start environments.
Active lifecycle and compliance documentation
For applications requiring a lower current rating (3.0 A), the sibling TB67S289FTG,EL shares the same half-bridge (8) output and parallel interface, but with a reduced output current limit.