Adafruit DRV8833 DC/Stepper Motor Driver Breakout Board

This motor driver chip is a good alternative to the TB6612 driver. Like this chip, it offers two full H-bridges but is better suited for low-voltage operation (it can operate motor power from 2.7 V to 10.8 V) and features a built-in current limiting function. The current is set to 1 A, so no more than 2 A can be achieved per chip. However, there is the option to disable the current limit or change it to a different threshold.