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Toshiba's Stepping Motor Driver IC Helps Save Board Space

2023-08-25 10:25:07

Toshiba Electronic Devices & Storage Corporation ("Toshiba") announces the launch of "TB67S549FTG," a new addition to its lineup of stepping motor driver ICs. This is a stepping motor driver IC in a small package with built-in constant current control function without external circuit components. New driver IC helps save board space for industrial equipment such as office automation and financial equipment

The output power transistor of TB67S549FTG adopts Toshiba's DMOS FET[1], the absolute maximum rated motor output voltage is 40V, and the absolute maximum rated motor output current is 1.5A[2]. This product is packaged in QFN24, and compared with Toshiba's current product TB67S539FTG in QFN32 package, the mounting area is reduced by about 36%. This helps save board space.

In addition, this new driver has built-in current sensing components required for constant current motor control, and the charge pump circuit does not require external capacitors. This will reduce external circuit components, thereby saving board space.

TB67S549FTG supports motor supply voltage from 4.5V to 33V, and the current consumption in sleep mode is 1μA, which can be widely used in 12V/24V power supply applications.


  • Printers
  • Multifunction printers (MFP)
  • Automated Teller Machines (ATMs)
  • Foreign currency exchange machines
  • Surveillance Cameras
  • Projectors


  • Small QFN24 package: 4.0mm×4.0mm (typ.)
  • Constant current motor control requires no external current sense resistor.
  • The charge pump circuit requires no external capacitors.
  • Low power consumption: sleep mode IM1 = 1μA (maximum)

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