Motor driver fits small IoT devices

-April 12, 2017

A single-chip 2.6 A driver for brushed DC motors, STMicroelectronics’ STSPIN250 targets battery-powered portable and wearable applications. This low-voltage, energy-efficient driver integrates a power MOSFET bridge and fixed off-time PWM current controller in a tiny 3×3 mm VFQFPN package.

The STSPIN250 offers a low on-resistance power stage, just 200 mΩ total for both high side and low side, and standby current consumption of less than 80 nA to help maximize battery runtime and minimize equipment case temperature. In addition, a supply voltage range of 1.8 V to 10 V allows designers to specify a power source as small as a single Li-ion cell.

With its maximum output current of 2.6 ARMS, the STSPIN250 can be used in low- to medium-power applications, such as portable printers, POS terminals, consumer devices, and medical and wellness devices ranging from electric toothbrushes to syringe pumps. The part also packs built-in protection features, including undervoltage lockout, nondissipative overcurrent protection, short-circuit protection, and thermal shutdown.

The STSPIN250 brushed DC motor driver costs $0.75 each in lots of 1000 units. An ecosystem supports evaluation and prototyping with the STSPIN250, comprising an STM32 Nucleo expansion board and related software tools that connect motor-control projects with STM32Cube MCU development resources.

STSPIN250 product page


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