Toshiba Launches H-bridge Driver IC Supporting 1.8V Low-Voltage and 4.0A Large-Current Drive

Toshiba Electronic Devices & Storage Corporation (Toshiba) today announced the launch of “TC78H653FTG, an addition to its line-up of dual-H-bridge[1] driver ICs for DC brushed motors and stepping motors that delivers the low voltage (1.8V) and high current (4.0A)[2] essential for low voltage equipment powered by dry-cell batteries, such as mobile devices, electronic products for the home and USB drives.

In recent years, as IoT advances and wireless technologies find increasingly wide use, demand for applications that can be remotely operated via smartphones and other tools is increasing, and with it interest in battery-powered motor control.

This trend is stimulating demand for driver ICs capable of driving devices even at the low voltage of 1.8V (0.9V — 2 batteries, whose capacity is reduced by discharge though 1.5V, 1.2V, etc. are initial voltages.).

Until now, the mainstream devices have been H-bridge driver ICs constructed with bipolar transistors, which can achieve stable operation at low voltage. However, problems with this include large current consumption that shortens battery life and increase current losses in ICs, and insufficient motor torque, since the voltage applied to the motor is lowered.

Toshibas new dual-H-bridge driver IC uses Toshibas specialized DMOS process for low voltage drives to achieve a longer battery life with a stable low voltage operation. Improved motor torque is also realized by reducing IC losses through low on-resistance [3]. The new product is suitable for motor applications driven by relatively low voltage batteries (1.8V to 7.0V).


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Main features

(1)   Low current consumption prolongs battery life.
(ICC = 0.6 mA (typ.) in operation mode when VM = 3.0V and Ta = 25°C; ICC = 0 µA (typ.) in standby mode when VM = 3.0V and Ta = 25°C)
(2) Low on-resistance reduces IC losses generated by voltage drops in the motor driver and increases the voltage applied to the motor, contributing to improved motor torque.
(Ron = 0.11Î (typ.) (total of high and low sides in large mode when VM = 5V and Ta=25°C)
(3) PWM control at 500 kHz is possible by high-speed output switching characteristics (ton = 90 ns, Toff = 90 ns).

Applications Motor applications driven by relatively low voltage batteries (1.8V to 7.0V), mobile devices (cameras, electric toothbrushes, printers) using 3.7V lithium-ion batteries, products for the home, such as electronic locks, smart meters, electronic bidet toilet, and toys using two 1.5V dry batteries, and devices using 5V USB power supply.


Main Specifications of 1.8 V Low Voltage Drive H Bridge Driver IC Series

Product name   TC78H651FNG  

TC78H653FTG (New)

Power supply voltage (Operating range) 1.8V to 6.0V 1.8V to 7.0V
Output current (Absolute maximum rating) 1.6A

2.0A in small mode 4.0A in large mode

Number of H-bridge channels 2ch

2ch in small mode 1ch in large mode

Drive motors

DC brushed motors (driving two motors is possible.) Bipolar stepping motors

Output on resistance (total of high and low side) 0.22Î (typ.)

0.22Î(typ.)in small mode 0.11Î(typ.)in large mode

Detection functions Over current detection, thermal shutdown, and under voltage lockout

TSSOP16 (size: 5.0 mm x 6.4 mm, pin pitch: 0.65 mm)

QFN16 (size: 3.0mm—3.0mm)

Other features

Built-in standby function: power consumption is 0μA (typ.) High speed PWM specification

Stock Check & Purchase  

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Notes: [1] Used to control forward and reverse rotation for DC brushed motors and stepping motors. Transistors and loads have an H-shaped configuration. [2] The rating in the large mode and the actual motor current are limited by operating conditions such as ambient temperature and power supply voltage [3] Resistive component when current flows. The lower resistance value achieves a lower loss in motor drives and suppresses heat generation.

For more information about the new product, please visit:

To check availability of the new products at online distributors, please visit:

Customer Inquiries: System LSI Marketing Dept.II Tel: +81-44-548-2188

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.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation combines the vigor of a new company with the wisdom of experience. Since becoming an independent company in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 22,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 800-billion yen (US$7 billion) and to contributing to a better future for people everywhere. Find out more about us at

Media Inquiries:
Toshiba Electronic Devices & Storage
Digital Marketing Department
Chiaki Nagasawa
[email protected]