KA9259CD [FAIRCHILD]
5-Channel Motor Driver; 5通道马达驱动器
| 型号： | KA9259CD |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 5-Channel Motor Driver |
| 文件： | 总15页 (文件大小：294K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA9259D
5-Channel Motor Driver
Features
Description
• 1-phase, full-wave, linear DC motor driver
• Built-in TSD (Thermal shutdown) circuit
• Built-in 5V regulator (With an external PNP Transistor)
• Built-in mute circuit
The KA9259D is a monolithic integrated circuit, suitable for
5-ch motor driver which drives focus actuator, tracking actu-
ator, sled motor, spindle motor and loading motor of CD sys-
tem.
• Built-in loading motor speed control circuit
• Wide operating supply voltage range: 6V~13.2V
28-SSOPH-375
Typical Applications
Ordering Information
• Compact disk player (CDP)
Device
Package
Operating Temp.
−25°C ~ +75°C
−25°C ~ +75°C
−25°C ~ +75°C
−25°C ~ +75°C
• Video compact disk player (VCD)
• Automotive compact disk player (CDP)
• Other compact disk media
KA9259CD 28-SSOPH-375
KA9259CDTF 28-SSOPH-375
KA9259ED 28-SSOPH-375
KA9259EDTF 28-SSOPH-375
Rev. 1.0.1
February. 2000.
©2000 Fairchild Semiconductor International
1
KA9259D
Pin Assignments
FIN
(GND)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
KA9259D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FIN
(GND)
2
KA9259D
Pin Definitions
Pin Number
Pin Name
I/O
O
O
I
Pin Function Description
1
DO1.1
DO1.2
DI1.1
DI1.2
REB
Focus output 1 (−)
Focus output 2 (+)
Focus input 1
2
3
4
I
Focus input 2 (Adjustable)
Regulator base
Regulator output, 5V
Mute
5
O
O
I
6
REO
7
MUTE
GND1
DI5.1
DI2
8
-
Ground 1
9
I
Loading input 1
Spindle input 2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
I
DO2.1
DO2.2
GND2
DI5.2
DO5.1
DO5.2
DO3.1
DO3.2
DI3
O
O
-
Spindle output (+)
Spindle output (−)
Ground 2
I
Loading input 2
Loading output 1(+)
Loading output 2(−)
Sled output (−)
O
O
O
O
I
Sled output (+)
Sled input
LD CTL
I
Loading motor speed control
Supply voltage 1
Supply voltage 2
2.5V bias
V
V
-
CC1
CC2
-
VREF
DI4.1
I
I
Tracking input 1 (Adjustable)
Tracking input 2
Tracking output 1 (+)
Tracking output 2 (−)
Ground 3
DI4.2
I
DO4.1
DO4.2
GND3
O
O
-
3
KA9259D
Internal Block Diagram
FIN
(GND)
28
27
26
+
25
24
23
22
21
20
19
18
+
17
16
15
+
10k
10k
−
−
−
−
Level
shift
Level
shift
Level
shift
10k
10k
TSD
−
−
−
COMP
−
2.5V
−
Regulator
10k
10k
Mute
50k
Level
shift
Level
shift
−
−
+
+
−
10k 10k
10k
10k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FIN
(GND)
4
KA9259D
Equivalent Circuits
Driver input (Except for loading motor driver)
Driver output
10k
2.5V
1
2
11 12 15
16 17 18 27 26
10k
20k
0.58k
3
10
4
25 19
24
V
REF1
Loading motor driver input
Loading motor speed control input
14
9
50k
50k
50k
50k
50k
50k
50k
50k
50k
50k
50k
20
50k
50k
50k
Mute input
Bias input
50k
50k
23
7
50k
5
KA9259D
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Value
18
1.7 note
−25 ~ +75
−55 ~ +150
1
Unit
Maximum supply voltage
Power dissipation
Operating temperature
Storage temperature
Maximum current output
NOTE:
V
V
W
°C
°C
A
CC MAX
P
D
T
OPR
T
STG
I
OMAX
1. When mounted on 76mm × 114mm × 1.57mm PCB (Phenolic resin material).
2. Power dissipation reduces 13.6mW / °C for using above Ta=25°C
3. Do not exceed Pd and SOA (Safe Operating Area).
Power Dissipation Curve
Pd (mW)
3,000
2,000
1,000
0
0
25
50
75
100
125
150
175
Ambient temperature, Ta [°C]
Recommended Operating Condition (Ta = 25°C)
Parameter
Symbol
Value
Unit
Operating supply voltage
V
6 ~ 13.2
V
CC
6
KA9259D
Electrical Characteristics
(Ta=25°C, V =8V, R =8Ω, f=1kHz, unless otherwise specified)
CC
L
Parameter
Quiescent circuit current
Mute-on current
Symbol
Conditions
Under no-load
Pin 7=GND
Min.
Typ.
Max.
10
5
Units
mA
mA
V
I
2.5
6
2.5
-
CCQ
I
-
-
MUTE
Mute-on voltage
Mute-off voltage
REGULATOR PART
Output voltage
V
-
-
0.5
-
MON
V
MOFF
2
-
V
V
I =100mA
L
4.7
−50
−20
5.0
0
5.3
50
80
V
REG
Load regulation
∆V
I =0→200mA
L
mV
mV
RL3
∆V
Line regulation
V
=6→13V, I =100mA
0
CC
CC
L
DRIVER PART (Except for loading motor driver)
Input offset voltage
V
-
-
−15
−40
0.25
0.25
2.5
-
-
-
15
mV
mV
A
IO
Output offset voltage 1
Maximum source current 1
Maximum sink current 1
Maximum output voltage 1
Maximum output voltage 2
Closed-loop voltage gain
Ripple rejection ratio
Slew rate
V
40
OO1
SOURCE1
I
R =8Ω→V
0.4
0.4
3.3
−4.5
6.5
60
2
-
L
CC
I
R =8Ω→GND
L
-
A
SINK1
V
V
V =0.7V
IN
-
V
OM1
OM2
V =7V
IN
−3.7
V
A
VF
V =0.1V
IN
5
8
-
dB
dB
V / µs
RMS
RMS
RR
SR
V =0.1V
IN
, f=120Hz
40
120Hz, V =1V
IN
,
1
-
RMS
Square wave
LOADING MOTOR DRIVER PART (Unless otherwise specified, VCTL=open)
Output voltage 1
Output voltage 2
V
V
V
V
=5V, V
=0V, V
=0V, R =45Ω
2.5
2.5
0.5
3.1
3.1
1.0
3.8
3.8
1.5
V
V
V
O1
O2
PIN9
PIN9
PIN14
PIN14
L
=5V, R =45Ω
L
Output voltage regulation 1
(CTL)
V
V
V
V
=3.5→4.5V, V
PIN9
=5V
OCTL1
CTL
=0V, R =45Ω
PIN14
L
Output voltage regulation 2
(CTL)
V
V
=3.5→4.5V, V
PIN9
=0V
0.5
1.0
300
300
1.5
700
700
V
OCTL2
CTL
=5V, R =45Ω
PIN14
L
Load regulation 1
∆V
I =100→400mA, V
=5V,
=0V,
-
-
mV
mV
RL1
RL2
L
PIN9
PIN9
V
=0V
PIN14
Load regulation 2
∆V
I =100→400mA, V
L
V
V
V
=5V
PIN14
Output offset voltage 2
Output offset voltage 3
V
V
=5V, V
=0V, V
=5V
=0V
−40
−40
-
-
40
40
mV
mV
OO2
OO3
PIN9
PIN9
PIN14
PIN14
7
KA9259D
Application Information
1. MUTE
Output driver
bias
Pin #7
High
Low
Mute circuit
7
Turn-off
Turn-on
• When the mute pin #7 is open or the voltage of the mute pin #7 is below 0.5V, the mute circuit is activated so that the output
circuit will be muted.
• When the voltage of the mute pin is above 2V, the mute circuit is disabled and the output circuit operates normal.
• If the chip temperature rises above 175°C, then the TSD (Thermal shutdown) circuit is activated and the output circuit is
muted.
2. TSD (THERMAL SHUTDOWN)
V
REF BG
Output driver
bias
R11
R12
Q11
• The V
REF BG
is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD
circuit.
• The base-emitter voltage of the TR, Q11 is designed to turn-on at below voltage.
= V × R12 / (R11+R12) = 400mV
V
BE
REF BG
• When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 400mV.
Hence, the Q11 would turn on so the output circuit will be muted.
3. REGULATOR
5
I
KSB772
−
VREF BG
D1
6
V
OUT
(5V)
+
R2
+
R1
D2
CE
100µF
R3
8
KA9259D
• The V
is the output voltage of the band-gap-referenced biasing circuit and is the reference voltage of the regulator.
REF BG
• The external circuit is composed of the transistor, KSB772 and a capacitor, 100µF, and the capacitor is used as a ripple
eliminator and should have a good temperature characteristics.
• The output voltage, V
is decided as follows.
OUT
× 2 = 2.5 × 2 = 5V (R2 = R3)
V
= V
REF BG
OUT
R2 = R3
4. LOADING MOTOR DRIVER
20
I
Buffer
Buffer
+∆V
+
R
−
COMP
−∆V
+∆V
Q1
Q3
Q2
Q4
9
+
M
V
REF1
−
14
15
16
I
−∆V
+
R
−
V
REF1
• The input voltages of (5V and 0V) or (0V and 5V) pairs are applied to the input pin #9 and #14 respectively.
• When the input voltages are applied to the input pin #9 and #14, then the output of the comparator is depends on the input
voltage status.
• As shown in the above diagram, the difference ∆V, [V
+ (I × R)] - [V
-(I × R)], is applied to the both terminals of
REF1
REF1
the motor. The direction of the motor is decided by the voltage difference, +∆V and −∆V.
• The output characteristics is as follows,
- If pin # 9=5V and #14=0V, then pin # 15=+∆V and #16= −∆V, hence the motor turn in forward direction.
- If pin # 9=0V and #14=5V, then pin # 15= −∆V and #16=+∆V, hence the motor turn in reverse direction.
- If pin # 9=5V and #14=5V, then ∆V=0V, hence the motor stop.
- If pin # 9=0V and #14=0V, then ∆V=0V, hence the motor stop.
• When the rotation speed control of the loading motor is desired, refer to the circuit below.
5. LOADING MOTOR SPEED CONTROL
V
V
CC
CC
V
CC
(8V)
V
(8V)
CC
50k
50k
50k
50k
R
R
20
20
4V
4V
D
• If the torque of the loading motor is too low when it is used with the pin #20 open, then it should be used as in the above
diagram.
• The desired torque could be obtained by selecting the appropriate resistor R as shown in the left diagram.
• If it is necessary, the zener diode can be used as in the right diagram.
• The maximum torque is obtained when the applied voltage at pin #20 is about 6.8V (at V =8V).
CC
9
KA9259D
6. DRIVER (EXCEPT FOR LOADING MOTOR DRIVER)
−∆I
Buffer
Buffer
+
AMP
VREF
(2.5V)
+
Level
shift
−
−∆V
+∆V
−
Q1
Q3
Q2
Q4
M
3
10
1
2
19 25
10k
10k
11
17
27
12
18
26
+∆I
4
24
+
100k
−
• The voltage, V
, is the reference voltage given by the bias voltage of the pin #23.
REF
• The input signal through the pin #3 is amplified by 10k/10k times and then fed to the level shift.
• The level shift produces the current due to the difference between the input signal and the arbitrary reference signal. The
current produced as +∆I and −∆I is fed into the driver buffer.
• Driver Buffer operates the power Transistor of the output stage according to the state of the input signal.
• The output stage is the BTL Driver and the motor is rotating in forward direction by operating TR Q1 and TR Q4. On the
other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction.
• When the input voltage through the pin #3 is below the V , then the direction of the motor in forward direction.
REF
• When the input voltage through the pin #3 is above the V
, then the direction of the motor in reverse direction.
REF
• If it is desired to change the gain, then the pin #4 or #24 can be used.
7. When the bias voltage of the pin #23 is below 1.4V, then the output circuit is muted.
Hence for the normal operation, the bias voltage should be used in 1.6V~6.5V.
8. Connect a by-pass capacitor, 0.1µF between the supply voltage source.
V
CC2
22
V
CC1 21
104
9. Radiation fin is connecting to the internal GND of the package.
Connect the fin to the external GND.
10
KA9259D
Typical Perfomance Charateristics
Vcc vs. Icc
Vcc vs. Imute
7
6
5
4
3
2
1
0
16
14
12
10
8
6
4
2
0
pin23=2.5
4
6
8
10
12
14
16
18
20
4
6
8
10
12
14
16
18
20
16
16
Vcc[V]
Vcc[V]
Vcc vs. Isink
Vcc vs. Isou
1000
900
800
700
600
500
400
300
200
900
800
700
600
500
400
300
pin23=2.5
RL=8Ω
pin23=2.5
RL=8Ω
4
6
8
10
12
14
16
4
6
8
10
12
14
Vcc[V]
Vcc[V]
V c c vs . A v f
Vcc vs. V
o m
4.5
7.5
7.0
6.5
6.0
5.5
5.0
4.0
3.5
3.0
2.5
2.0
pin23=2.5
RL=8Ω
pin23=2.5
14
4
6
8
10
12
14
4
6
8
10
12
16
Vcc[V]
Vcc[V]
11
KA9259D
Typical Perfomance Charateristics (Continue)
Vcc vs. Vreg
Frequency vs. Avf
6.0
7.0
6.0
5.0
4.0
3.0
2.0
5.5
5.0
4.5
4.0
Vcc=vari
pin23=2.5
RL=8Ω
3.5
3.0
1
100
10000
1000000
3
5
7
9
11
13
15
Vcc[V]
12
KA9259D
Test Circuits
3
SW13
2
8Ω
1
SW12
VCC
8Ω
SW14
3
2
8Ω
1
3
SW20
3
1
SW10
VCC
VCC
2
2
8Ω
8Ω
1
TRACKING
SLED
2
CTL
SW19
100µF
SW9
~
~
~
Ripple
VCC
VCC
+
10µF
8Ω
45Ω
+
+
2
2
+
10µF
3
3
1
SW11
SW21
8Ω
20Ω
1
1
3
3
1
3
2
2
SW18
SW17
SW15
SW16
8Ω
1
IL
2.5V
23
VCC
VCC
28
27
26
25
24
22
21
20
19
18
17
16
15
GND3 DO4.2 DO4.1 DI4.2 DI4.1 VREF VCC2
VCC1 LD ctl DI3 DO3.2 DO3.1 DO5.2 DO5.1
KA9259D
DO1.1 DO1.2 DI1.1 DI1.2 REB
REO MUTE
GND DI5.1 DI2
DO2.1 DO2.2 GND2 DI5.2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VCC
VCC
VCC
SW4
1
1
1
SW1
8Ω
8Ω
SW7
Mute
1
3
3
KSB772
2
2
8Ω
8Ω
SW5
3
3
2
+
Loading
reverse
2
+
Loading
forwaed
+
IL
VCC
VCC
1
~
~
100µF
SW6
SW3
Spindle
Focus
1
SW2
SW8
2
2
8Ω
8Ω
3
3
13
KA9259D
Application Circuits
SERVO PRE-AMP
CONTROLLER
FOUCS
TRACKING
BIAS
SLED
SPINDLE
CONTROL
FORWARD
REVERSE
SLED
LOADING
MOTOR
TRACKING
ACTUATOR
MOTOR
VCC
102
M
M
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GND3 DO4.2 DO4.1 DI4.2 DI4.1 VREF VCC2
VCC1 LD ctl
DI3 DO3.2 DO3.1 DO5.2 DO5.1
KA9259D
DO1.1 DO1.2 DI1.1 DI1.2 REB
REO MUTE
GND DI5.1 DI2 DO2.1 DO2.2 GND2 DI5.2
10 11 12 13 14
1
2
3
4
5
6
7
8
9
VCC
5V
out
KSB772
M
MUTE
FOCUS
ACTUATOR
SPINDLE
MOTOR
+
Low: ON
High: OFF
100µF
14
KA9259D
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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2000 Fairchild Semiconductor International
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