This part is a kind of semiconductor called SLA7024M.

Function of this product has HIGH-CURRENT PWM/ UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS.

Manufacturers : Allegro MicroSystems

Image and pinout :

Some of the text within the PDF file :

SLA7024M, SLA7026M, AND SMA7029M HIGH-CURRENT PWM, UNIPOLAR STEPPER MOTOR CONTROLLER/DRIVERS SMA7029M 1 Data Sheet 28201 OUTA OFF DELAY A REFERENCE A GROUND A IN A OUT A SENSE A CNTRL SPLY SENSE B OUT B OFF DELAY B GROUND B REFERENCE B IN B OUT B VREF + The SLA7024M, SLA7026M, and SMA7029M are designed for high-efficiency and high-performance operation of 2-phase, unipolar stepper motors. An automated, innovative packaging technology combined with power FETs and monolithic logic/control circuitry advances power multi-chip modules (PMCMs™) toward the complete integration of motion control. Highly automated manufacturing techniques provide low-cost and exceptionally reliable PMCMs suitable for controlling and directly driving a broad range of 2-phase, unipolar stepper motors. The three [ ... ]

SLA7024M PDF Datasheet Download