Fairchild Semiconductor KA8301L Datasheet
KA8301
Bi-Directional DC Motor Driver
www.fairchildsemi.com
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 directio n cha nge cir c uit .
• 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 au dio or video equipment
• General DC motor
©2000 Fairchild Semiconductor International
Ordering Information
Device Package Operating Temp.
KA8301-L 10-SIPH-B −25°C ~ +75°C
Rev. 1.0.1
February. 2000.
1
KA8301
Pin Assignments
KA8301
GND V
OUT1VZ1
12345678910
V
F
R
R
IN
V
IN
CC1
V
CC2
V
Z2
Pin Definitions
Pin Number Pin Name I/O Pin Function Description
1 GND - Ground
2V
3V
4V
5F
6R
7V
8V
9V
10 V
OUT1
Z1
R
IN
IN
CC1
CC2
Z2
OUT2
O Output 1
- Phase compensation
I Motor speed control
I Input 1
I Input 2
- Supply voltage (Signal)
I Supply voltage (Power)
I Phase compensation
O Output 2
V
OUT2
2
Internal Block Diagram
KA8301
DRIVER
PRE-DRIVER
12345678910
GND V
OUT1VZ1
V
F
R
IN
LOGIC
R
V
IN
CC1
V
CC2
V
V
Z2
OUT2
3
KA8301
Equivalent Circuits
Description Pin No. Internal circuit
Output 2, 10
2
10
Vcc
Vcc
Phase
3, 9
compensation
Speed control 4
3
9
Vcc
VCC
4
Vcc
4
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