Toshiba Electronic Devices & Storage Corporation (Toshiba) has launched motor driver ICs with the launch of “TB67S549FTG,” a stepping motor driver IC housed in a small package with built-in constant-current control that does not require external circuit components. The new driver contributes to saving space on circuit boards and is suited for industrial equipment such as office automation and financial equipment.
TB67S549FTG uses Toshiba’s DMOS FET for its output power transistor and features a motor output voltage rating of 40V and a motor output current rating of 1.5A. The use of the QFN24 package reduces the mounting area to about 64% of the QFN32 package used for Toshiba’s current product, TB67S539FTG. This helps save space on circuit boards.
In addition, the new driver incorporates a current detection part for constant-current motor control and requires no external capacitor for a charge pump circuit. This will reduce external circuit components, thereby saving space on circuit boards.
TB67S549FTG supports motor power supply voltages from 4.5V to 33V, and has a current consumption of up to 1μA in sleep mode, making it widely used for 12V/24V power supply applications.
Toshiba will continue to develop products for a wide range of applications and to provide total solutions that contribute to user design simplification, board area reduction, and total cost reduction.
 Double-Diffused MOSFET
 The actual current that can drive motors is limited by ambient temperature, power supply voltage, and other operating conditions.
- Multi-function printers (MFPs)
- Automatic teller machines (ATMs)
- Money-changing machines
- Surveillance cameras
- Small QFN24 package: 4.0mm × 4.0mm (typ.)
- An external current detection resistor is not required for constant current motor control.
- Requiring no external capacitor for charge pump circuit.
- Low power consumption in a sleep mode: IM1=1μA (max)
(Unless otherwise specified, @Ta=25°C)
Motor power supply VM (V)
4.5 to 33
Absolute maximum ratings
Motor output voltage VOUT (V)
Motor output current IOUT (A)
Bipolar stepping motor
Output transistor between
Power consumption IM1 max (μA)
Over-current detection, Thermal shutdown, Under voltage lockout
Size typ. (mm)
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Source: Business Wire India
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