Toshiba expands portfolio of single channel motor driver ICs

Housed in an HSOP8 package, the IC features non-latching overcurrent detection.

The IC can drive brushed DC motors and supports battery powered devices or any devices with a 5V USB power supply.

It’s also suitable for use with many 12-36V industrial devices, home appliances such as coffee machines and robotic vacuum cleaners, fiscal printers, and electronic door locks that require a drive of up to 3.5A.

The device has an input voltage range from 4.5-44V. The maximum motor drive output current is 3A at 44V and built-in protection mechanisms include undervoltage lock out (UVLO), auto-return thermal shut down and non-latching overcurrent protection (OCP).

OCP is a safety function that prevents damage to the motor driver by turning off the output when the output current exceeds the pre-set threshold level.

The previous version of this chip used latching overcurrent detection, where output is turned off indefinitely until a power cycle or entering and leaving the standby mode.

The TB67H451FNG is non-latching however, meaning operators can assign a recovery time after which the device will automatically resume function once the overcurrent condition is removed.

Aiming for lower power consumption, the TB67H451FNG standby current consumption by a power supply circuit, which allows automatic transitions from stop mode moving to standby mode and turns off the VCC regulator for the internal circuit operation.

Housed in a 4.9×6mm surface-mount type HSOP8 package, Toshiba says the IC achieves heat dissipation through the package’s thermal pad design.