KA8301L [FAIRCHILD]
Bi-Directional DC Motor Driver; 双向DC电机驱动器
| 型号： | KA8301L |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Bi-Directional DC Motor Driver |
| 文件： | 总12页 (文件大小：394K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA8301
Bi-Directional DC Motor Driver
Features
Description
• Built-in brake function.
The KA8301 is a monolithic integrated circuit designed for
driving bi-directional DC motor with braking and speed con-
trol, 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.
• 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.
10-SIPH-B
Typical Application
Ordering Information
• Video cassette recorder (VCR) loading motor
• Low current DC motor such audio or video equipment
• General DC motor
Device
Package
Operating Temp.
KA8301-L 10-SIPH-B
−25°C ~ +75°C
Rev. 1.0.1
February. 2000.
©2000 Fairchild Semiconductor International
1
KA8301
Pin Assignments
KA8301
GND
V
V
V
F
R
V
V
V
V
OUT1
2
Z1
R
IN
IN
CC1
7
CC2
8
Z2
OUT2
10
1
3
4
5
6
9
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Description
1
2
GND
-
O
-
Ground
V
OUT1
Output 1
3
V
Phase compensation
Motor speed control
Input 1
Z1
4
V
R
I
5
F
IN
I
6
R
IN
I
Input 2
7
V
-
Supply voltage (Signal)
Supply voltage (Power)
Phase compensation
Output 2
CC1
CC2
8
V
I
9
V
I
Z2
10
V
OUT2
O
2
KA8301
Internal Block Diagram
DRIVER
LOGIC
PRE-DRIVER
1
2
3
4
5
6
7
8
9
10
GND
V
V
V
F
IN
R
V
V
V
V
OUT2
OUT1
Z1
R
IN
CC1
CC2
Z2
3
KA8301
Equivalent Circuits
Description
Pin No.
Internal circuit
Output
2, 10
Vcc
Vcc
2
10
Phase
3, 9
compensation
3
9
Speed control
4
Vcc
Vcc
VCC
4
4
KA8301
Equivalent Circuit (Continued)
Description
Pin No.
Internal circuit
Input
5, 6
Vcc
Vcc
VCC
5
6
VCC1
VCC2
7
8
GND
1
5
KA8301
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Value
18
Unit
V
Supply voltage
V
CCmax
Maximum output current
Power dissipation
Input voltage
I
1.6note1
15note2
A
Omax
P
d
W
V
V
−0.3 ~ V
CC
IN
Operating temperature
Storage temperature
T
−25 ~ +75
°C
°C
OPR
T
−55 ~ +150
STG
Notes:
1. Duty 1/100, pulse width 500µs
2. 1) When mounted on glass epoxy PCB (76.2 × 114 × 1.57mm)
2) Power dissipation reduces 120mW / °C for using above Ta=25°C
3) Do not exceed Pd and SOA(Safe Operating Area).
Power Dissipation Curve
20
Pd (W)
15
SOA
0
0
25
50
75
100
125
150
175
Ambient temperature, Ta [°C]
Recommened Operating Conditions (Ta=25°C)
Parameter
Symbol
Value
Unit
Operating supply voltage
V
8 ~ 18
V
CC
6
KA8301
Electrical Characteristics (Ta=25°C, Vcc=12V)
Parameter
Quiescent current
Symbol
Conditions
Pin5 & 6: GND, R =∞
Min.
Typ.
5.5
10
Max.
20
50
50
2.0
2.0
1
Units
mA
µA
µA
V
I
3
Q
L
Min. input-on current 1
Min. input-on current 2
Input threshold voltage 1
Input threshold voltage 2
Output leakage current 1
Output leakage current 2
Zener current 1
I
I
R =∞, pin5=I , pin6=L
L IN1
-
-
IN1
IN2
R =∞, pin5=L, pin6=I
L IN2
10
V
V
R =∞, pin5=V
L INTH1
, pin6=L
0.7
0.7
-
1.3
1.3
-
INTH1
INTH2
R =∞, pin5=L, pin6=V
L INTH2
V
I
R =∞, pin5 & 6=GND
L
mA
mA
mA
mA
V
OL1
OL2
I
R =∞, pin5 & 6=GND
L
-
-
1
I
I
R =∞, pin5=H, pin6=L
L
-
0.85
0.85
7.2
7.1
0.83
1.5
1.5
-
Z1
Z2
Zener current 2
R =∞, pin5=L, pin6=H
L
-
Output voltage 1
V
V
R =60Ω, pin5=H, pin6=L
L
6.6
6.6
-
O1
O2
Output voltage 2
R =60Ω, pin5=L, pin6=H
L
-
V
Saturation voltage (Pin10-1)
V
R =R =∞, pin5=H, pin6=L,
1.5
V
CE10-1
L
C
I
=100mA
SINK
Saturation voltage (Pin2-1)
Saturation voltage (Pin8-2)
Saturation voltage (Pin8-10)
V
R =R =∞, pin5=L, pin6=H,
-
-
-
0.83
0.83
0.83
1.5
1.5
1.5
V
V
V
CE2-1
CE8-2
CE8-10
L
C
I
=100mA
SINK
V
R =R =∞, pin5=H, pin6=L,
L C
I
=100mA
SOURCE
V
R =R =∞, pin5=L, pin6=H,
L
C
I
=100mA
SOURCE
7
KA8301
Application Information
1. FORWARD AND REVERSE CONTROL LOGIC
Pin #5
Pin #6
Pin #2
Pin #10
Function
Brake
L (0.7V ↓)
L (0.7V ↓)
H (2.0V ↑)
H (2.0V ↑)
L (0.7V ↓)
H (2.0V ↑)
L (0.7V ↓)
H (2.0V ↑)
L
L
L
H
L
Reverse
Forward
Brake
H
H
H
• If pin #5=H, pin #6=L, load current flows from pin #2 to pin #10 through a motor.
• If pin #5=L, pin #6=H, load current flows from pin #10 to pin #2 through a motor.
• If pin #5=pin #6=L or pin #5=pin #6=H, the KA8301 stops supplying the power to motor while absorbing counter EMF
from the motor as a brake.
2. RUSH CURRENT RESTRICTING CIRCUIT
If a high voltage generated during reversing operation is applied across pin #2 and pin #10, an internal comparator activates
the rush current restricting circuit.
3. DRIVE CIRCUIT
In the forward mode, the drive circuit supplies a load current to the motor from pin #2 to pin #10.
In the reverse mode, it supplies the current from pin #10 to pin #2.
The output voltage (V ) applied to the motor is given by the followings;
OUT
V
OUT
= V − V (sat), where V : a zener voltage applied to pin #4
ZD CE ZD
If pin #4 is left open, the output voltage is given by the followings;
V
OUT
= V
− V (sat, pnp) − 2V − V (sat)
CE CE
CC1
F
8
KA8301
Typical Performance Characteristics
9
KA8301
Typical Performance Characteristics (Continued)
10
KA8301
Typical Performance Characteristics (Continued)
11
KA8301
Test Circuits
KA8301
GND
1
V
V
V
F
R
V
V
V
V
OUT1
2
Z1
R
IN
IN
CC1
CC2
8
Z2
OUT2
10
3
4
5
6
7
9
C
D
0.1µF
A
S4
S3
S7
S1
S2
RC
10Ω
A
S5
A
A
S6
V
CC
Z
D
7.4V
V
IN
Typical Application Circuits
KA8301
GND
1
V
V
V
4
F
R
V
V
V
V
OUT1
2
Z1
R
IN
IN
CC1
7
CC2
8
Z2
OUT2
3
5
6
9
10
10
V
CC
0.1µ
M
12
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