This part is a kind of semiconductor called A1441.

Function of this product has Low-Voltage Full-Bridge Brushless DC Motor Driver.

Manufacturers : Allegro MicroSystems

Image and pinout :

Some of the text within the PDF file :

A1441 Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation Features and Benefits ▪ Single-chip solution for high reliability ▪ Chopper stabilization technique for precise signal response over operating range ▪ 2.0 to 4.0 V operation ▪ Sleep mode pin allowing external logic signal enable/ disable to reduce average power consumption ▪ Restart feature ▪ Small package size Description The A1441 is a full-bridge motor driver designed to drive low-voltage bipolar brushless dc motors. Commutation of the motor is achieved by use of a single Hall element sensor to detect the position of an alternating-pole ring magnet. A high density merged Bipolar-CMOS semiconductor process allows the integration of the Hall element on the same IC as the motor control circui [ ... ]

A1441 PDF Datasheet Download