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KA9258D(KA9258CD)
4-Channel Motor Driver
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 KA9258CD Package 28-SSOPH-375 Operating Temp. -40C ~ +85C -40C ~ +85C
KA9258CDTF 28-SSOPH-375
Rev. 1.0.4
(c)2003 Fairchild Semiconductor Corporation
2
1 27 2 3 4 5 6 7 26 25 24 23 22
DO1.1
KA9258D(KA9258CD)
28
GND3 DO4.2 DO4.1 DI4.2 DI4.1 VREF VCC2
Pin Assignments
DO1.2 DI1.1 DI1.2 REG REGO MUTE
FIN
KA9258D
FIN
8 9 10
DI2.2 DO2.1 DO2.2 GND2 OPOUT DI2.1 GND1
21 20 19 18
VCC1 DI3.2 DI3.1 DO3.2
11 12 13 14
DO3.1
17 16 15
OPIN+ OPIN-
KA9258D(KA9258CD)
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name DO1.1 DO1.2 DI1.1 DI1.2 REG REO MUTE GND1 DI2.1 DI2.2 DO2.1 DO2.2 GND2 OPOUT OPIN(-) OPIN(+) DO3.1 DO3.2 DI3.1 DI3.2 VCC1 VCC2 VREF DI4.1 DI4.2 DO4.1 DO4.2 GND3 I/O O O I I O O I I I O O O I I O O I I I I I O O Channel 1 output 1 Channel 1 output 2 Channel 1 input 1 Channel 1 input 2 External transistor base drive output Regulator output Mute signal input Ground 1 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 Channel 4 input 1 Channel 4 input 2 Channel 4 output 1 Channel 4 output 2 Ground 3 Pin Function Description
3
KA9258D(KA9258CD)
Internal Block Diagram
OPIN+
DO4.1
DO3.1
DO4.2
VREF
28
27
26
25
24
23
22
FIN
DO3.2
GND3
VCC2
DI4.2
DI3.2
21
20
19
18
17
16
15
10K
10K
10K
TSD
10K
2.5V 10K 10K
4-CH BTL Driver Output
10K
10K
10K
10K
1
DO1.1
2
DO1.2
3
DI1.1
4
DI1.2
5
REG
6
REGO
7
MUTE
FIN
8
GND1
9
DI2.1
10
DI2.2
11
DO2.1
12
DO2.2
13
GND2
14
OPOUT
4
OPIN-
DI4.1
VCC1
DI3.1
KA9258D(KA9258CD)
Equivalent Circuits
Driver Input
VCC
Driver Output
10k 2.5V
50 3 10 19 25 11.8k 1 2 11 12
17 18 26 27 50 4 100 9 20 24 0.58k VREF1 20k
Regulator
Regulator Output
VCC VCC 53k 5 50
VCC 23k
VCC
VCC 2k 6 50 10k 10k 2k
10k
Mute Input
Bias Input
VCC 100k 50 7 50k 50k 23
50
5
KA9258D(KA9258CD)
Equivalent Circuits (Continued)
OP-AMP Output OP-AMP Input
VCC VCC VCC
VCC VCC
50 14 50 50
15 50 50
16
4.8k
4.8k
6
KA9258D(KA9258CD)
Absolute Maximum Ratings (Ta = 25C)
Parameter Supply Voltage Power Dissipation Operating Temperature Storage Temperature Maximum Output Current Symbol VCC PD TOPR TSTG IOMAX Value 15 1.7
note
Unit V W C C A
-40 ~ +85 -55 ~ +150 1
Note: 1. When mounted on 76.2mm x 114mm x 1.57mm PCB (Phenolic resin material).
2. Power dissipation reduces 13.6mW/C for using above Ta=25C
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 = 25C)
Parameter Operating Supply Voltage Symbol VOPR Value 6 ~ 13.2 Unit V
7
KA9258D(KA9258CD)
Electrical Characteristics (Ta = 25C)
(Ta=25C, VCC=8V, RL=8, f=1kHz, unless otherwise specified) Parameter REGULATOR PART Regulator Output Voltage Load Regulation Line Regulation Quiescent Circuit Current Input Offset Voltage
(Note1)
Symbol VREG VRL VCC ICCQ VOF VOO ISINK ISOURCE VOM AVF RR SR VOF1 IB1 VOH1 VOL1 ISINK1 ISOURCE1 GVO1 RR1 SR1 CMRR1
(Note1)
Conditions IL=100mA IL=0 ~ 200mA IL=200mA, VCC=6 ~ 9V VI = 0 VCC= 13V RL= 4, VCC RL= 4, GND VI = 2VRMS, 1kHz VI = 0.1VRMS, 1kHz VI = -20dB, 120Hz 100Hz, Square wave RL= 50, GND RL= 50, VCC VIN = -75dB, f =1kHz VIN = -20dB, f =120kHz Square, VOUT = 2Vp-p, f = 120kHz VIN = -20dB, f =1kHz
Min. 4.75 -40.0 -10.0 5.5 -5.0 -50 0.5 0.5 2.5 4.5 60.0 1.0 -5 6 10 10 65 50 0.5 70
Typ. 5 0 0 9.5 0 0 0.8 0.8 3.0 6.5 80.0 2.0 40 50 78 70 1 84
Max. 5.25 10.0 20.0 13.5 5.0 50 7.5 +5 300 1.8 -
Unit V mV mV mA mV A V dB V/s mA nA V V mA mA dB dB V/s dB
DRIVER PART (EXCEPT FOR LOADING MOTOR DRIVER)
Output Offset Voltage Maximum Sink Current Maximum Source Current Maximum Output Voltage Closed Loop Voltage Gain Ripple Rejection Ratio Slew Rate (Note1) Input Offset Voltage Input Bias Current High Level Output Voltage Low Level Output Voltage Output Sink Current Output Source Current Open Loop Voltage Gain Ripple Rejection Ratio Slew Rate (Note1) Common Mode Rejection Ratio
Note : 1. Guranteed Design Value
(Note1)
LOADING MOTOR DRIVER PART (UNLESS OTHERWISE SPECIFIED, VCTL=OPENED)
8
KA9258D(KA9258CD)
Application Information
1. Mute Function
VCC
Pin 7 High Low Open
Mute circuit Mute-off Mute-on Mute-on
7
4-Channels BTL driver Bias Circuit Block
* 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 VREF 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. *
VBE =
VREFBG x R12 = 460[mV ] R11 + R12
* When the chip temperature rises up to 175C, 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 25C.
3. OP-AMP
* General OP-amplifier is integrated in the IC for user's convenience.
16 15 14
9
KA9258D(KA9258CD)
4. Balanced Transformerless(BTL) Driver
23
VREF
I
Buffer
Q1 Q2
22
Level Shift 3
10K 10K I
2
Buffer
M
1
Q3 Q4
4
BTL Driver
28
* The voltage, VREF, 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 VREF, then the direction of the motor in forward direction. * When the input voltage through the pin #3 is above the VREF, 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, 0.1F between the supply voltage source.
22 21
VCC2 VCC1
KA9258D
FIN FIN
0.1uF
* 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:VREF=2.5[V], Mute : OFF
RLOAD=8[]
Figure 1. VCC vs. AVF
Figure 2. VCC vs. ICC
At mute on
RLOAD=4[]
Figure 3. VCC vs. IMUTE
Figure 4. VCC vs. ISINK
RLOAD=4[]
ILOAD=100[mA]
Figure 5. VCC vs. ISOU
Figure 6. VCC vs. VREG
11
KA9258D(KA9258CD)
Test Circuits
50k
50k OPI + 470F SW17 + 10F PC-V + 1000F 10k Open 1M Short
OPIN(-) 15 OPOUT 14
1M V
1
0
2
SW16 0 SW9 2 4 V 1 SW8 2 1k SW15
10k 1k
SW14 1
3 2
1
0
SW6 1
0 1 2 4
0
SW5 2 4
16 OPIN(+) GND2 13 17 DO3.1 DO2.2 12
V SW7
8
SW10 18 DO3.2 DO2.1 11 10F + 19 DI3.1 20 DI3.2 DR3 21 VCC1
DI2.2 10 DI2.1
+ 10F
DR2
9 8
VCC
22 VCC2 2.5V DR4 24 DI4.1 10F + 25 DI4.2 23 Vref
K A 9 2 5 8 D
GND
MUTE 1
SW4 2
MUTE
7 6 5 KS8772 4 3 2 8 SW3 1 V + 10F DR1 + 100F IL Pin 21, 22
REO VREF DI1.2 DI1.1
26 DO4.1 8 SW13
27 DO4.2 DO1.2 28 GND3 4 1 SW11 0 2 1 4 2
DO1.1
4 0 SW12 1 SW1 0 2
4
SW2
12
KA9258D(KA9258CD)
Application Circuits
28
1
SLED BIAS
Focus Actuator
27
2
Servo Pre-amp
TEACKING FOCUS SPINDLE VCC
26
3 4
Tracking Actuator
25
KSB772
24
5 6
23
Mute
22
7
KA9258D
FIN
FIN
8 9 10 11
21
VCC
20 19 18
Sled Motor
Spindle Motor
M
17 12 13 14
M
16 15
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.
www.fairchildsemi.com 6/11/03 0.0m 001 Stock#DSxxxxxxxx 2003 Fairchild Semiconductor Corporation
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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