Tiny 2.6 A brushed DC motor driver targets battery-powered IoT devices

The STSPIN250 single-chip 2.6A driver for brushed DC motors extends the family of miniature, low-voltage, energy-efficient drivers for battery-powered portable and wearable applications. The driver integrates a power-MOSFET bridge and fixed off-time PWM current controller in a tiny 3 x 3 mm package.

It features a 200 mΩ total high-side + low-side on-resistance for the power stage, and an 80nA standby mode that help maximize battery runtime and keep equipment-case temperatures down. Its supply-voltage range of 10 to 1.8 V allows designers to specify a power source as small as a single Li-ion cell.


The brushed DC motor driver offer a high output-current capability that allows use in low-to-medium-power applications such as portable printers, POS terminals, consumer devices, electronic valves or door lockers, toys, and medical or wellness devices ranging from electric toothbrushes to syringe pumps. It also has built-in protection features including under-voltage lockout, non-dissipative over-current protection, short-circuit protection, and thermal shutdown.


The STSPIN250 joins the three monolithic, low-voltage drivers for portable and battery-powered applications including the STSPIN220 for stepper motors, STSPIN230 for three-phase brushless motors, and STSPIN240 for brushed DC motors up to 1.3A.

The STSPIN250 is in production now in the 3mm x 3mm VQFPN package, priced $0.75 for orders of 1000 pieces.

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