Expanding TI's brushed DC motor driver portfolio, the DRV8871 is one of three new brushed DC drivers with integrated field-effect transistors (FETs), developed for space-constrained designs. The DRV8870 features integrated regulation to limit current to an external current-sense resistor. The DRV8872 provides fault monitoring to increase system reliability.

Key features and benefits

• Reduced system complexity: When designing with the DRV8871, the elimination of discrete sense resistors reduces board space by up to 25 percent.

• Optimal power consumption: The devices use standard low-cost, low-power resistors to set the current threshold, limiting startup and stall inrush currents. The ability to limit current to a known level can reduce the system power requirements and bulk capacitance needed to maintain a stable voltage, especially for motor startup and stall conditions.

• Simplified design: Board layout with accurate current regulation is simplified because no sense routing is required with the DRV8871.

• Wide supply range: The devices offer a wide 6.5- to 45-V motor-supply voltage to support industry-standard 12- and 24-V supplies.