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Toshiba Launches H Bridge Driver IC for Low-Voltage 2.5V Drive

April 18, 2017


TOKYO–Toshiba Corporation's (TOKYO: 6502) Storage & Electronic Devices Solutions Company today announced the launch of "TC78H630FNG," "TC78H621FNG," and "TC78H611FNG," additions to its line-up of H bridge[1] driver ICs for DC brushed motors and stepping motors used in the mobile battery-drive equipment, home appliances, and housing and facility equipment. Sample shipments* start today with mass production scheduled for end of July.

TC78H630FNG has one H bridge with a 2A rating and is suitable for the large current drive of DC brushed motors. Additionally, making on-resistance[2] 0.4Ω (sum of upper and lower: typ.) in the motor driver output block allows the IC to realize a large current drive for motors.

TC78H621FNG and TC78H611FNG have two H bridges with 1A ratings, and are suitable for driving bipolar stepping motors or two DC brushed motors.

This series supports 2.5V to 15V power supply for driving motors, and diverse applications include mobile devices (cameras and small printers) with a 3.7V lithium-ion battery, home appliances with 5V or 12V power supply (refrigerators and air-conditioners), and housing and facility equipment (smart meters, hot-water supply machines, water supply valves of water service, and electronic locks).

Main Features of New Products

  • Abnormality detection functions (over current detection, thermal shutdown circuit, and under voltage lockout circuit) improve safety in driving the motor.
  • Consumption current of approximately 0μA (typ.) in standby mode (in case of motor stop) is realized.
  • Shoot-through current protection is incorporated. The motor can be controlled without considering the dead time in switching output ON and OFF.

Main Specifications

Part No. TC78H630FNG TC78H621FNG TC78H611FNG
Features Suitable for large current drive of DC brushed motor Suitable for driving stepping motors Suitable for driving 2 DC brushed motors
Power supply voltage (operating range) Power supply for motor drive: 2.5 to 15V
Logic power supply: 2.7 to 5.5V
Output current
(Absolute maximum
2.1 A 1.1 A 1.1 A
Number of H bridge
1ch 2ch 2ch
Drive motor ・DC brushed motor
Compatible with brake mode
・Stepping motor
Full step: Controllable 3-ports
Half step: Controllable 4-ports
・DC brushed motor
・Stepping motor
Full step: Controllable 4-ports
Half step: Controllable 4-ports
・DC brushed motor
Compatible with brake mode
Output ON resistance
(Sum of Upper and Lower)
0.4 Ω (typ.) 0.8 Ω (typ.) 0.8 Ω (typ.)
Safety function Over current detection
Thermal shutdown
Under voltage lockout
Shoot-through current protection
Package TSSOP16

Note 1: A circuit formed by aligning transistors in an H form. Used to drive DC brushed motors and stepping motors with forward and reverse control.

Note 2: Resistance when current flows. The lower values enable low dissipations for driving motors and reducing a heat generation.

* Sample here refers to "samples for functional evaluation," which may differ from the mass production product in specifications.

For more information about Toshiba’s stepping motor driver ICs, please visit:

Customer inquiries:

Mixed Signal IC Sales and Marketing Department
Tel: +81-44-548-2821

*Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.