KA8301

www.fairchildsemi.com KA8301 Bi-Directional DC Motor Driver Features Built-in brake function. Built-in element to absorb a surge current derived from changing motor direction and braking motor drive. External motor speed control pin Motor direction change circuit. Interfaces with CMOS devices. Description The KA8301 is a monolithic integrated circuit designed for driving bi-directional DC motor with braking and speed control, and it is suitable for the loading motor driver of VCR systems. The speed control can be achieved by adjusting the external voltage of the speed control pin. 10-SIPH-B Typical Application Video cassette recorder (VCR) loading motor Low current DC motor such audio or video equipment General DC motor Ordering Information Device KA8301-L Package 10-SIPH-B Operating Temp. −25°C ~ +75°C Rev. 1.0.1 February. 2000. ©2000 Fairchild Semiconductor International 1 KA8301 Pin Assignments KA8301 GND 1 VOUT1 2 VZ1 3 VR 4 FIN 5 RIN 6 VCC1 7 VCC2 8 VZ2 9 VOUT2 10 Pin Definitions Pin Number 1 2 3 4 5 6 7 8 9 10 Pin Name GND VOUT1 VZ1 VR FIN RIN VCC1 VCC2 VZ2 VOUT2 I/O O I I I I I O Ground Output 1 Phase compensation Motor speed control Input 1 Input 2 Supply voltage (Signal) Supply voltage (Power) Phase compensation Output 2 Pin Function Description 2 KA8301 Internal Block Diagram DRIVER PRE-DRIVER LOGIC 1 GND 2 VOUT1 3 VZ1 4 VR 5 FIN 6 RIN 7 VCC1 8 VCC2 9 VZ2 10 VOUT2 3 KA8301 Equivalent Circuits Description Outpu...