2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.4
Features
4-CH Balanced Transformerless(BTL) Driver
Output Gain Adjustable
Built in OP-Amplifier
Built in Mute Function
Built in Thermal Shutdown Circuit (TSD)
Operating Range 6 ~ 13.2V
Description
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.
28-SSOPH-375
Typical Applications
Compact Disk Player (CDP)
Video Compact Disk Player (VCD)
Automotive Compact Disk Player
Other Compact Disk Media
Ordering Information
Device
Package
Operating Temp.
KA9258CD
28-SSOPH-375
-40
C ~ +85C
KA9258CDTF 28-SSOPH-375
-40
C ~ +85C
KA9258D(KA9258CD)
4-Channel Motor Driver
KA9258D(KA9258CD)
2
Pin Assignments
KA9258D
1
2
3
4
5
6
7
8
9
10
11
13
14
28
27
26
25
24
23
22
FIN
21
20
19
18
17
16
15
FIN
12
DO
1
.
1
DO1
.
2
DO
2.
1
DO2
.
2
DO
4.
2
DO4
.
1
DO
3.
2
DO3
.
1
DI
4
.
2
DI4.1
DI
3
.
2
DI3.1
OP
I
N
+
OPIN-
O
P
OUT
DI
1
.
1
DI1.2
REG
REGO
MUTE
DI
2
.
1
DI
2
.
2
GND
1
GN
D2
GN
D3
VC
C
2
VCC
1
VREF
KA9258D(KA9258CD)
3
Pin Definitions
Pin Number
Pin Name
I/O
Pin Function Description
1
DO1.1
O
Channel 1 output 1
2
DO1.2
O
Channel 1 output 2
3
DI1.1
I
Channel 1 input 1
4
DI1.2
I
Channel 1 input 2
5
REG
O
External transistor base drive output
6
REO
O
Regulator output
7
MUTE
I
Mute signal input
8
GND1
-
Ground 1
9
DI2.1
I
Channel 2 output 1
10
DI2.2
I
Channel 2 output 2
11
DO2.1
O
Channel 2 input 1
12
DO2.2
O
Channel 2 input 2
13
GND2
-
Ground 2
14
OPOUT
O
OP-amplifier output
15
OPIN(-)
I
OP-amplifier negative input
16
OPIN(+)
I
OP-amplifier positive input
17
DO3.1
O
Channel 3 output 1
18
DO3.2
O
Channel 3 output 2
19
DI3.1
I
Channel 3 input 1
20
DI3.2
I
Channel 3 input 2
21
VCC1
-
Power supply voltage 1
22
VCC2
-
Power supply voltage 2
23
VREF
I
Bias Voltage
24
DI4.1
I
Channel 4 input 1
25
DI4.2
I
Channel 4 input 2
26
DO4.1
O
Channel 4 output 1
27
DO4.2
O
Channel 4 output 2
28
GND3
-
Ground 3
KA9258D(KA9258CD)
4
Internal Block Diagram
1
2
3
4
5
6
7
8
9
10
11
13
14
28
27
26
25
24
23
22
FIN
21
20
19
18
17
16
15
4-CH BTL
Driver Output
FIN
12
10K
10K
10K
10K
10K
10K
10K
10K
TSD
DO
1.
1
DO
1.
2
DO
2.
1
DO
2.
2
DO
4
.
2
DO
4.1
DO
3.
2
DO
3.1
DI4.2
DI4.1
DI
3
.
2
DI3.1
OP
I
N
+
OP
IN-
OP
O
U
T
DI1.1
DI
1
.
2
RE
G
REGO
MU
TE
10K
10K
2.5V
DI2.1
DI2.2
GN
D
1
GN
D
2
GN
D
3
VCC2
VCC1
VR
E
F
KA9258D(KA9258CD)
5
Equivalent Circuits
Driver Input
Driver Output
Regulator
Regulator Output
Mute Input
Bias Input
10
19
3
25
2.5V
9
20
4
24
VCC
50
100
10k
50
1
17
2
18
11 12
26 27
V
REF1
20k
0.58k
11.8k
5
VCC
23k
53k
10k
50
VCC
VCC
6
10k
VCC
2k
50
VCC
2k
10k
7
50k
50k
100k
50
VCC
23
50
KA9258D(KA9258CD)
6
Equivalent Circuits
(Continued)
OP-AMP Output
OP-AMP Input
14
50
50
VCC
VCC
50
15
VCC
50
VCC
VCC
16
50
4.8k
4.8k
KA9258D(KA9258CD)
7
Absolute Maximum Ratings (Ta = 25
C)
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
Recommended Operating Condition (Ta = 25
C)
Parameter
Symbol
Value
Unit
Supply Voltage
V
CC
15
V
Power Dissipation
P
D
1.7
note
W
Operating Temperature
T
OPR
-40 ~ +85
C
Storage Temperature
T
STG
-55 ~ +150
C
Maximum Output Current
I
OMAX
1
A
Parameter
Symbol
Value
Unit
Operating Supply Voltage
V
OPR
6 ~ 13.2
V
3,000
2,000
1,000
0
0
25
50
75
100
125
150
175
Pd (mW)
Ambient temperature, Ta [
C]
KA9258D(KA9258CD)
8
Electrical Characteristics (Ta = 25
C)
(Ta=25
C, V
CC
=8V, R
L
=8
, f=1kHz, unless otherwise specified)
Note :
1. Guranteed Design Value
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
REGULATOR PART
Regulator Output Voltage
V
REG
I
L
=100mA
4.75
5
5.25
V
Load Regulation
V
RL
I
L
=0 ~ 200mA
-40.0
0
10.0
mV
Line Regulation
V
CC
I
L
=200mA, V
CC
=6 ~ 9V
-10.0
0
20.0
mV
DRIVER PART (EXCEPT FOR LOADING MOTOR DRIVER)
Quiescent Circuit Current
I
CCQ
V
I
= 0
5.5
9.5
13.5
mA
Input Offset Voltage
(Note1)
V
OF
-
-5.0
0
5.0
mV
Output Offset Voltage
V
OO
V
CC
= 13V
-50
0
50
Maximum Sink Current
I
SINK
R
L
= 4
, V
CC
0.5
0.8
-
A
Maximum Source Current
I
SOURCE
R
L
= 4
, GND
0.5
0.8
-
Maximum Output Voltage
V
OM
V
I
= 2V
RMS
, 1kHz
2.5
3.0
-
V
Closed Loop Voltage Gain
A
VF
V
I
= 0.1V
RMS
, 1kHz
4.5
6.5
7.5
dB
Ripple Rejection Ratio
(Note1)
RR
V
I
= -20dB, 120Hz
60.0
80.0
-
Slew Rate
(Note1)
SR
100Hz, Square wave
1.0
2.0
-
V/
s
LOADING MOTOR DRIVER PART (UNLESS OTHERWISE SPECIFIED, VCTL=OPENED)
Input Offset Voltage
V
OF1
-
-5
-
+5
mA
Input Bias Current
I
B1
-
-
-
300
nA
High Level Output Voltage
V
OH1
-
6
-
-
V
Low Level Output Voltage
V
OL1
-
-
-
1.8
V
Output Sink Current
I
SINK1
RL= 50
, GND
10
40
-
mA
Output Source Current
IS
OURCE1
RL= 50
, V
CC
10
50
-
mA
Open Loop Voltage Gain
G
VO1
V
IN
= -75dB, f =1kHz
65
78
-
dB
Ripple Rejection Ratio
(Note1)
RR1
V
IN
= -20dB, f =120kHz
50
70
-
dB
Slew Rate
(Note1)
SR1
Square, V
OUT
= 2Vp-p,
f = 120kHz
0.5
1
-
V/
s
Common Mode Rejection Ratio
CMRR1
V
IN
= -20dB, f =1kHz
70
84
-
dB
KA9258D(KA9258CD)
9
Application Information
1. Mute Function
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
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 transistor, Q11 is designed to turn-on at below voltage.
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.
Pin 7
Mute circuit
High
Mute-off
Low
Mute-on
Open
Mute-on
VCC
4-Channels BTL driver
Bias Circuit Block
7
V
REFBG
R11
R12
4-Channels BTL driver
Bias Circuit Block
Q11
]
[
460
12
11
12
mV
R
R
R
V
V
REFBG
BE
=
+
=
16
15
14
KA9258D(KA9258CD)
10
4. Balanced Transformerless(BTL) Driver
The voltage, V
REF
, is the reference voltage given by the bias voltage of the pin #23.
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
REF
, then the direction of the motor in forward direction.
When the input voltage through the pin #3 is above the V
REF
, then the direction of the motor in reverse direction.
If it is desired to change the gain, then the pin #4 or #24 can be used.
5. Connect a by-pass capacitor, 0.1
F between the supply voltage source.
Radiation FIN is connecting to the internal GND of the package.
Connect the FIN to the external GND.
10K
10K
V
REF
Q1
Q2
Q3
Q4
22
Buffer
Buffer
BTL Driver
2
1
28
23
3
4
I
I
M
Level
Shift
KA9258D
22
21
0.1uF
FIN
FIN
VCC1
VCC2
KA9258D(KA9258CD)
11
Typical Performance Characteristics
Test contrions:V
REF
=2.5[V], Mute : OFF
Figure 1. V
CC
vs. AVF
Figure 2. V
CC
vs. I
CC
Figure 3. V
CC
vs. I
MUTE
Figure 4. V
CC
vs. I
SINK
Figure 5. V
CC
vs. I
SOU
Figure 6. V
CC
vs. V
REG
R
LOAD
=8[
]
R
LOAD
=4[
]
R
LOAD
=4[
]
I
LOAD
=100[mA]
At mute on
KA9258D(KA9258CD)
12
Test Circuits
1
2
3
4
5
10
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
23
24
26
27
28
25
50k
10
F PC-V
+
1k
OPI
SW15
1k
SW16
470
F
50k
10k
1M
+
V
SW17
SW8
0
1
2
SW9
0
1
2
4
V
8
SW10
10
F
+
DR3
V
CC
2.5V
DR4
10
F
+
SW13
SW12
SW11
0
1
2
4
8
4
0
1
2
SW3
4
8
4
V
1
2
0
SW2
SW1
DR1
+
10
F
Pin 21, 22
KS8772
IL
+
100
F
MUTE
SW4
1
2
+
10
F
DR2
V
SW7
4
SW5
SW6
0
1
2
4
2
1
0
1
0
2
1000
F
1
Open
Short
+
1M
10k
2
3
SW14
K
A
9
2
5
8
D
DO1.1
DO1.2
DI1.1
DI1.2
VREF
REO
MUTE
GND
DI2.1
DI2.2
DO2.1
DO2.2
GND2
OPOUT
GND3
DO4.2
DO4.1
DI4.2
DI4.1
Vref
VCC2
VCC1
DI3.2
DI3.1
DO3.2
DO3.1
OPIN(+)
OPIN(
-)
KA9258D(KA9258CD)
13
Application Circuits
KA9258D
1
2
3
4
5
6
7
FI
N
8
9
10
11
12
13
14
28
27
26
25
24
23
22
FIN
21
20
19
18
17
16
15
M
M
VCC
VCC
FOCUS
TEACKING
SLED
SPINDLE
BIAS
Servo
Pre-amp
Sled
Motor
Spindle
Motor
Tracking
Actuator
Focus
Actuator
KSB772
Mute
KA9258D(KA9258CD)
6/11/03 0.0m 001
Stock#DSxxxxxxxx
2003 Fairchild Semiconductor Corporation
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
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.
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