ST Releases 2.6A Micro Brushed DC Motor Driver Chip for Portable Battery-Powered IoT Hardware

STMicroelectronics expands its portfolio of miniature low-voltage, high-efficiency motor drives to introduce STSPIN250 2.6A brushed DC motor monolithic drivers for battery-powered portable and wearable devices.

The new driver chip integrates a power MOSFET full bridge and a fixed-time PWM current controller in a 3mm x 3mm micro package that saves space on the portable device. The low on-resistance of the power stage (200mΩ for the upper arm + lower arm) and the lowest standby power consumption (less than 80nA) on the market help maximize battery life and reduce case temperature. The 10V to 1.8V operating voltage allows designers to choose a single lithium battery power supply.

High performance, cost effectiveness and reliability, brushed DC motors are widely used in a variety of electronic equipment. The high output current of STSPIN250 is suitable for medium and low power equipment, such as portable printers, POS payment terminals, consumer electronics, electric valves, electric door locks, electronic toys, and medical products such as syringe pumps and electric toothbrushes. The new drive also includes comprehensive protection features including undervoltage lockout protection (UVLO), non-dissipative overcurrent protection, short circuit protection and thermal shutdown.

STSPIN250 is the follow-on product of STSPIN220 stepper motor driver, STSPIN230 three-phase brushless motor driver, STSPIN240 1.3A brushed DC motor driver and three single-chip low voltage drivers for STMicroelectronics last year for portable and battery-powered devices. Now the STSPIN product family allows designers to choose a compact, easy-to-use, energy-efficient drive for the most common types of motors for portable devices, driving the widespread use of IoT hardware.

The STSPIN250 motor drive ecosystem supports fast drive evaluation and product prototyping. Key components include the STM32 Nucleo expansion board (X-NUCLEO-IHM13A1) and software tools for the rich STM32Cube MCU development resources for motor control projects (X-CUBE) -SPN13).

Author：Brittany Antonia （The author of article owns the copyright.）