Built-in protection functions such as arsenic overcurrent, short circuit, and overheating protection

STMicroelectronics (hereinafter ST) has launched the STSPIN250, a new single-chip 2.6A driver for brushed DC motors, adding to its family of energy-efficient, ultra-compact, low-voltage drivers suitable for battery-powered portable and wearable applications.

This driver integrates a full-power MOSFET bridge and a fixed-off-time PWM current controller into an ultra-small 3mm x 3mm package, reducing space for portable equipment. With a low-on-resistance power stage and low current consumption of less than 80nA in standby mode, it maximizes battery runtime and keeps the equipment case temperature low. Since the supply voltage range is 10V to 1.8V, the power supply can be specified as a single lithium-ion cell battery during design.

The high output current performance of the STSPIN250 allows it to be used in low- and medium-power applications, such as portable printers, POS terminals, consumer devices, electronic valves, door locks, and toys, as well as medical and wellness devices like electric toothbrushes and syringe pumps. In addition, this product has built-in protection functions such as UVLO (Under-Voltage Lockout) and non-dissipative overcurrent protection, short circuit protection, and thermal shutdown.



The STSPIN250 belongs to a family of three monolithic, low-voltage drivers for portable and battery-powered applications launched by ST last year (the STSPIN220 for stepper motors, the STSPIN230 for 3-phase brushless motors, and the STSPIN240 for brushed DC motors up to 1.3A). The STSPIN family supports designers in developing a diverse range of battery-powered IoT devices by providing compact, convenient, and energy-efficient drivers suitable for the motor types most commonly used in portable applications today.

In addition, a complete ecosystem is available to facilitate the rapid and easy evaluation and prototyping of the STSPIN250. This ecosystem consists of the STM32 Nucleo expansion board (X-NUCLEO-IHM13A1) and related software tools (X-CUBE-SPN13) that connect extensive STM32Cube MCU development resources with motor control projects.