Toshiba has introduced DMOS dual H-bride motor driver that can run from 2.5V to 16V while delivering up to 2A.

Toshiba-TC78H660FNG-motor-driver

Called TC78H660FNG, its two H-bridges can drive two brushed dc motors or one stepper motor. Driver on-resistance is typically 0.48Ω.

“The driver is suitable for a spectrum of potential applications, such as mobile devices running off a 3.7V Li-Ion battery and 5V USB-powered equipment, as well as 12V-rated household appliances,” according to the company. “Supporting energy efficient operation, it has low current requirements when in standby mode, drawing 0.1µA.”

Resistor-less current sensing is built in, and an internal regulator supplies on-chip circuitry.

When driving the inductance of a motor winding, three modes are offered:

‘Charge’ power is fed into the winding
‘Slow’ existing current isswitched to circulate in the winding
‘Fast’ winding energy is directed back into the power rails

The IC controls the motor current to be constant by changing the three modes listed above automatically, according to the data sheet.

That said, forward, reverse, stop and brake modes can also be selected, and chopping frequency can be adjusted by external resistor.

Safety features include under-voltage lockout, over-current detection and thermal shut down.

Packaging is 5 x 6.4mm TSSOP16.