This part is a kind of semiconductor called AN6651.

Function of this product has LINEAR INTEGRATED CIRCUIT.

Manufacturers : Wing Shing Computer

Image and pinout :

Some of the text within the PDF file :

AN6651 LINEAR INTEGRATED CIRCUIT MOTOR SPEED CONTROL CIRCUIT DESCRIPTION The AN6651 is a monolithic integrated circuit designed for the rotating control of a compact DC motor which is used for a tape recorder, recorder player etc. FEATURES *Wide operating supply voltage: Vcc=3.5V ~ 14.4V *Small four-lead plastic packer for compact motor. *Few external components *Stable low reference voltage (1.0V, typical) *Wide motor speed setting *Reverse voltage protection circuit built-in 1: Vcc 1 TO-126B 2: CONTROL 3: GND 4: MOTOR BLOCK DIAGRAM Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: ic@wingshing.com AN6651 PARAMETER Supply Voltage Supply Current (note 1) Power Di [ ... ]

AN6651 PDF Datasheet Download