A sense resistor is the most common means to set the motor current. It provides best precision when using a 1% type. A 5% type also will perform fine for most applications. The selection of appropriate sense resistors depends on following considerations: First, the maximum current to be driven into the motor, use the peak value required. To get more power out of a motor, the designer can provide a boost current above the nominal current. Up to 50% more current is realistic for short time like acceleration phase. Finally, the maximum power dissipation resulting from the selection of the resistor. A 0805 resistor is sufficient for one Ampere of motor current, higher currents require 2010 or 2512 resistors.