KA9258D [FAIRCHILD]
4-CH MOTOR DRIVER; 4 - CH电机驱动器
| 型号： | KA9258D |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | 4-CH MOTOR DRIVER |
| 文件： | 总14页 (文件大小：597K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA9258D(KA9258CD)
4-Channel Motor Driver
Features
Description
• 4-CH Balanced Transformerless(BTL) Driver
• Output Gain Adjustable
The KA9258D is a monolithic integrated circuit, suitable for
4-CH motor driver which drives tracking actuator, focus
actuator, sled motor and spindle motor of compack disk
player system.
• Built in OP-Amplifier
• Built in Mute Function
• Built in Thermal Shutdown Circuit (TSD)
• Operating Range 6 ~ 13.2V
28-SSOPH-375
Typical Applications
Ordering Information
• Compact Disk Player (CDP)
• Video Compact Disk Player (VCD)
• Automotive Compact Disk Player
• Other Compact Disk Media
Device
Package
Operating Temp.
-40°C ~ +85°C
-40°C ~ +85°C
KA9258CD
28-SSOPH-375
KA9258CDTF 28-SSOPH-375
Rev. 1.0.4
©2003 Fairchild Semiconductor Corporation
KA9258D(KA9258CD)
Pin Assignments
FIN
27
26
23
18
17
16
25
15
28
24
22
21
20
19
KA9258D
6
13
7
14
1
5
8
9
12
2
3
10
11
4
FIN
2
KA9258D(KA9258CD)
Pin Definitions
Pin Number
Pin Name
I/O
O
O
I
Pin Function Description
1
2
3
4
DO1.1
DO1.2
DI1.1
Channel 1 output 1
Channel 1 output 2
Channel 1 input 1
Channel 1 input 2
DI1.2
I
5
6
7
8
REG
REO
MUTE
GND1
DI2.1
O
O
I
-
I
External transistor base drive output
Regulator output
Mute signal input
Ground 1
9
Channel 2 output 1
Channel 2 output 2
Channel 2 input 1
Channel 2 input 2
Ground 2
OP-amplifier output
OP-amplifier negative input
OP-amplifier positive input
Channel 3 output 1
Channel 3 output 2
Channel 3 input 1
Channel 3 input 2
Power supply voltage 1
Power supply voltage 2
Bias Voltage
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
DI2.2
I
DO2.1
DO2.2
GND2
OPOUT
OPIN(-)
OPIN(+)
DO3.1
DO3.2
DI3.1
O
O
-
O
I
I
O
O
I
I
-
-
I
I
I
DI3.2
VCC1
VCC2
VREF
DI4.1
Channel 4 input 1
Channel 4 input 2
Channel 4 output 1
Channel 4 output 2
Ground 3
DI4.2
DO4.1
DO4.2
GND3
O
O
-
3
KA9258D(KA9258CD)
Internal Block Diagram
FIN
27
26
23
18
17
16
25
15
28
24
22
21
19
20
10K
10K
10K
10K
TSD
2.5V
4-CH BTL
Driver Output
10K
10K
10K
10K
10K
10K
6
13
7
8
12
14
1
5
9
2
3
10
11
4
FIN
4
KA9258D(KA9258CD)
Equivalent Circuits
Driver Input
Driver Output
VCC
10k
100
50
3
10
2.5V
11.8k
0.58k
19 25
1
2
11 12
17 18 26 27
20k
50
4
9
20 24
V
REF1
Regulator
Regulator Output
VCC VCC
VCC
23k
VCC
53k
VCC
50
5
2k
2k
6
50
10k
10k
10k
Mute Input
Bias Input
VCC
100k
50
50k
23
50
7
50k
5
KA9258D(KA9258CD)
Equivalent Circuits (Continued)
OP-AMP Output
OP-AMP Input
VCC
VCC
VCC
VCC
VCC
15
16
50
50
50
50
14
50
4.8k
4.8k
6
KA9258D(KA9258CD)
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Supply Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Maximum Output Current
Symbol
Value
Unit
V
W
°C
°C
A
V
15
CC
note
P
1.7
D
T
OPR
-40 ~ +85
-55 ~ +150
1
T
STG
I
OMAX
Note:
1. When mounted on 76.2mm × 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
OPR
6 ~ 13.2
V
7
KA9258D(KA9258CD)
Electrical Characteristics (Ta = 25°C)
(Ta=25°C, V =8V, R =8Ω, f=1kHz, unless otherwise specified)
CC
L
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
REGULATOR PART
Regulator Output Voltage
Load Regulation
V
∆V
∆V
I =100mA
4.75
-40.0
-10.0
5
0
0
5.25
10.0
20.0
V
mV
mV
REG
L
I =0 ~ 200mA
RL
L
Line Regulation
I =200mA, V =6 ~ 9V
L CC
CC
DRIVER PART (EXCEPT FOR LOADING MOTOR DRIVER)
Quiescent Circuit Current
Input Offset Voltage
Output Offset Voltage
I
V
V
V = 0
5.5
-5.0
-50
0.5
0.5
2.5
4.5
60.0
1.0
9.5
0
0
0.8
0.8
3.0
6.5
80.0
2.0
13.5
5.0
50
-
-
-
7.5
-
-
mA
mV
CCQ
I
(Note1)
-
OF
V
= 13V
CC
OO
Maximum Sink Current
Maximum Source Current
Maximum Output Voltage
Closed Loop Voltage Gain
I
R = 4Ω, V
SINK
L
CC
A
V
I
R = 4Ω, GND
SOURCE
V
A
L
V = 2V
, 1kHz
V = 0.1V , 1kHz
RMS
OM
I
RMS
VF
RR
SR
I
dB
V/µs
(Note1)
Ripple Rejection Ratio
Slew Rate
V = -20dB, 120Hz
I
100Hz, Square wave
(Note1)
LOADING MOTOR DRIVER PART (UNLESS OTHERWISE SPECIFIED, VCTL=OPENED)
Input Offset Voltage
Input Bias Current
V
I
-
-
-
-
-5
-
6
-
-
-
+5
300
-
mA
nA
V
OF1
B1
High Level Output Voltage
Low Level Output Voltage
Output Sink Current
Output Source Current
Open Loop Voltage Gain
V
OH1
V
-
-
1.8
V
OL1
I
RL= 50Ω, GND
RL= 50Ω, V
CC
10
10
65
50
40
50
78
70
-
-
-
-
mA
mA
dB
dB
SINK1
IS
OURCE1
G
RR1
V
V
= -75dB, f =1kHz
= -20dB, f =120kHz
VO1
IN
IN
(Note1)
Ripple Rejection Ratio
Square, V
= 2Vp-p,
OUT
(Note1)
Slew Rate
SR1
0.5
70
1
-
-
V/µs
f = 120kHz
Common Mode Rejection Ratio
CMRR1
V
IN
= -20dB, f =1kHz
84
dB
Note :
1. Guranteed Design Value
8
KA9258D(KA9258CD)
Application Information
1. Mute Function
VCC
4-Channels BTL driver
Bias Circuit Block
Pin 7
High
Low
Mute circuit
Mute-off
Mute-on
Mute-on
7
Open
• When the mute (pin 7) is high level, the bias circuit of BTL driver is activated. On the other hand, when the mute (pin7) is
open or low level, the bias circuit of BTL driver is disabled. So that the 4-channels BTL driver output circuit will be muted.
2. TSD (Thermal Shutdown) Function
VREFBG
4-Channels BTL driver
Bias Circuit Block
R11
Q11
R12
• The V
is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD
REF BG
circuit.
• The base-emitter voltage of the transistor, Q11 is designed to turn-on at below voltage.
•
V
REFBG × R12
VBE
=
= 460[mV]
11+ 12
• When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 460mV.
Hence, the Q11 would turn on so the output circuit will be muted. The TSD circuit has the hysteresis temperature of 25°C.
3. OP-AMP
• General OP-amplifier is integrated in the IC for user’s convenience.
16
14
15
9
KA9258D(KA9258CD)
4. Balanced Transformerless(BTL) Driver
22
Buffer
Buffer
∆I
∆I
VREF
23
Q2
Q1
Level
Shift
2
1
3
10K
10K
M
4
Q3
Q4
BTL Driver
28
• 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 transistor Q1 and Q4. On the
other hand, if transistor Q2 and Q3 is operating, the motor is rotating in reverse direction
• When the input voltage through the pin #3 is below the V
• When the input voltage through the pin #3 is above the V
• If it is desired to change the gain, then the pin #4 or #24 can be used.
, then the direction of the motor in forward direction.
REF
, then the direction of the motor in reverse direction.
REF
5. Connect a by-pass capacitor, 0.1µF between the supply voltage source.
VCC2
22
VCC1
21
0.1uF
KA9258D
FIN
FIN
• Radiation FIN is connecting to the internal GND of the package.
Connect the FIN to the external GND.
10
KA9258D(KA9258CD)
Typical Performance Characteristics
• Test contrions:V
=2.5[V], Mute : OFF
REF
R
=8[Ω]
LOAD
Figure 2. V
vs. I
CC
CC
Figure 1. V
CC
vs. AVF
R
=4[Ω]
LOAD
At mute on
Figure 3. V
vs. I
MUTE
CC
Figure 4. V
vs. I
SINK
CC
I =100[mA]
LOAD
R
=4[Ω]
LOAD
Figure 6. V
CC
vs. V
REG
Figure 5. V
CC
vs. I
SOU
11
KA9258D(KA9258CD)
Test Circuits
50kΩ 50kΩ
OPI
+
470µF
1
0
2
1MΩ
PC-V
10µF
SW17
+
+
V
1000µF
3
2
10kΩ
SW16
1kΩ
SW14
SW15
10kΩ
1kΩ
0
0
1MΩ
Open
0
SW5
0
SW6
1
SW8
2
1
1
SW9
2
1
1
Short
2
2
OPIN(−)
15
16
14
13
OPOUT
4Ω
4Ω
4Ω
OPIN(+) GND2
V
V
DO2.2
DO3.1
17
18
19
20
21
12
11
SW7
8Ω
SW10
DO3.2
DO2.1
DR2
10µF
+
10µF
DI3.1
DI2.2 10
+
DI2.1
GND
DI3.2
9
8
DR3
VCC1K
A
9
2
5
8
D
MUTE
1
SW4
V
CC
2
7
22
VCC2 MUTE
100µF
+
23 Vref
6
5
2.5V
REO
DR4
IL
DI4.1
24
VREF
KS8772
10µF
Pin 21, 22
25
26
27
28
4
3
2
1
DI4.2
DI1.2
DI1.1
+
DR1
+
10µF
DO4.1
SW13
8Ω
DO4.2 DO1.2
8Ω
SW3
GND3
DO1.1
4Ω
4Ω
V
1
2
1
2
4Ω
4Ω
SW11
SW12
0
0
1
2
SW2
SW1
0
12
KA9258D(KA9258CD)
Application Circuits
SLED
BIAS
Focus
Actuator
TEACKING
Servo
Pre-amp
FOCUS
Tracking
Actuator
SPINDLE
VCC
KSB772
Mute
VCC
Sled
Motor
Spindle
Motor
M
M
13
KA9258D(KA9258CD)
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
CORPORATION. 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.
www.fairchildsemi.com
6/11/03 0.0m 001
Stock#DSxxxxxxxx
2003 Fairchild Semiconductor Corporation
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