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KA9258D
4-Channel Motor Driver
Features
· · · · · · · 1-phase, full-wave, linear DC motor driver Output gain adjustable Built in OP-amp Built in mute function Built in level shift circuit 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 loading motor of CD/CD-ROM/ DVD system, and can also drive spindle motor of CD 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 KA9258BD Package 28-SSOPH-375 Operating Temp. -40°C ~ +85°C -40°C ~ +85°C
KA9258BDTF 28-SSOPH-375
Rev. 1.0.1 February. 2000.
©2000 Fairchild Semiconductor International
1
KA9258D
1 27 2 3 4 5 6 7 26 25 DI4.2 24 DI4.1 23 22
28
DO1.1
GND3
Pin Assignments
DO1.2
DO4.2
DI1.1
DO4.2
DI1.2
REG
REO
VREF
MUTE
VCC2
FIN (GND)
KA9258D
GND1
DO2.1
DO2.2
GND2
OPOUT
FIN (GND)
2
21
8 9 10 DI2.2 11 12 13 14 DI2.1
VCC1
20 19 18 17 16 15
DI3.2
DI3.1
DO3.2
DO3.1
OPIN (+) OPIN (-)
KA9258D
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 I I I O O O I I O O I I I I I O O Drive output Drive output Drive input Drive input Regulator Regulator output Mute Ground 1 Drive input Drive input Drive output Drive output Ground 2 Op-amp output Op-amp input (-) Op-amp input (+) Drive output Drive output Drive input Drive input Supply voltage Supply voltage 2.5V bias voltage Drive input Drive input Drive output Drive output Ground 3 Pin Function Description
3
KA9258D
Internal Block Diagram
OPIN (-) 16 DO4.2 DO4.1 DO3.2 DO3.1 GND3 VREF VCC2 VCC1 DI4.2 DI4.1 DI3.2 DI3.1 OPIN(+) 15 - + 14 OPOUT
28
27
26
25 10k
24
23
22
21
20 10k
19
18
17
- Level shift - +
+ 10k
-
TSD 10k
+
- Level shift - +
+
Regulator 10k 50k - Level shift - + 10k 1 DO1.1 2 DO1.2 3 DI1.1 4 DI1.2 5 REG 6 REO 10k 7 MUTE 8 GND1 9 DI2.1 10k + Mute 50k 10k 10 DI2.2 11 DO2.1 10k +
DO2.2
4
GND2
-
-
+ Level shift - 12
+
13
KA9258D
Equivalent Circuits
Driver input Driver output
VCC
10k 2.5V
50 3 10 19 25 11.8k 1 2 11 12
17 18 26 27 50 4 100 9 0.58k VREF1 20 24 20k
Regulator
Regulator output
VCC VCC 53k 50 5
VCC 23k
VCC
VCC 2k 6 50 10k 10k 2k
10k
Mute input
Bias input
VCC 100k 50 7 50k 23 50
50k
5
KA9258D
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
Absolute Maximum Ratings (Ta = 25°C) °
Parameter Supply voltage Power dissipation Operating temperature Storage temperature Maximum output current Symbol VCC PD TOPR TSTG IOMAX Value 18 1.7note -40 ~ +85 -55 ~ +150 1 Unit V W °C °C A
Notes 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 Operating supply voltage Symbol VOPR Value 6 ~ 13.2 Unit V
6
KA9258D
Electrical Characteristics (Ta = 25°C) °
A. Regulator
Parameter Regulator output voltage Load regulation Line regulation Symbol VREG VRL VCC Conditions IL=100mA IL=0 ~ 200mA IL=200mA, VCC=6 ~ 9V Min. 4.75 -40.0 -10.0 Typ. 5 0 0 Max. 5.25 10.0 20.0 Units V mV mV
B. Drive
Parameter Quiescent circuit current Input offset voltage Output offset voltage Maximum sink current Maximum source current Maximum output voltage Closed loop voltage gain Ripple rejection ratio Slew rate Symbol ICCQ VOF VOO ISINK ISOURCE VOM AVF RR SR VI=0 RL=4, VCC RL=4, GND VI=2VRMS, 1kHz VI=0.1VRMS, 1kHz VI=-20dB, 120Hz 100Hz, Square wave Conditions Min. 5.5 -5.0 -30 0.5 0.5 2.5 4.5 60.0 1.0 Typ. 9.5 0 0 0.8 0.8 3.0 6.5 80.0 2.0 Max. 13.5 5.0 30 7.5 V / µs V dB A Units mA mV
C. OP AMP
Parameter 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 Common mode rejection ratio Symbol VOF1 IB1 VOH1 VOL1 ISINK1 ISOURCE1 GVO1 RR1 SR1 CMRR1 Conditions 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. -5 6 10 10 65 50 0.5 70 Typ. 40 50 78 70 1 84 Max. +5 300 1.8 Units mA nA V V mA mA dB dB V / µs dB
7
KA9258D
Application Information
1. MUTE
Pin #7 High Low Open
Mute circuit Turn-off Turn-on Turn-on
7
Output driver bias
· 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)
VREF BG Output driver bias
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 TR, Q11 is designed to turn-on at below voltage. VBE = VREF BG × R12 / (R11 + R12) = 460mV · When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 460mV. (Hysteresis: 25°C) Hence, the Q11 would turn on so the output circuit will be muted.
8
KA9258D
3. OP-AMP OP-amp is integrated in the IC for user's convenience.
AMP-I(+) 16 pin AMP -I(-) 15 pin
+ - 14 pin AMP-O
4. DRIVER
VREF (2.5V) 3 10 10k 4 9 24 100k 20
+ -
AMP Level shift
-I
+ -
Buffer -V M 1 2 12 18 26 Q4 +V
Q1
Q2
19 25 10k +I + - Buffer Q3
11 17 27
· 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 TR 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 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, 0.1µF between the supply voltage source. µ
VCC1 22 VCC2 21 104
6. Radiation fin is connecting to the internal GND of the package. Connect the fin to the external GND.
9
KA9258D
Typical Performance Characteristics
VCC vs. ICC
13.5 11.5
Imute [mA] Icc [mA]
VCC vs. Imute
10 8 6 4 2 0
9.5 7.5 5.5 4 6 8 10 12
VCC [V]
pin23=2.5
14
16
18
20
4
6
8
10
12
14
16
18
20
VCC [V]
VCC vs. Vreg
5.25 5.15 5.05 4.95 4.85 4.75 4 6 8 10 12
VCC [V]
VCC vs. Isink
1300 1100 Isink [mA] 900 700 pin23=2.5 500
Vreg [V]
pin23=2.5 RL=4 4 6 8 10
VCC [V]
14
16
18
20
12
14
VCC vs. Vreg
1400 7 1200 Isource [mA] 1000 800 600 400 4 6 8
VCC [V]
VCC vs. Isink
6 5 Avf [dB] 4 3 2 1 14 0 4 6 8 10 12 14 16 18 20
VCC [V]
pin23=2.5 RL=4 10 12
pin23=2.5 Vin=0.1Vrms f=1kHz RL=8
10
KA9258D
Typical Performance Characteristics (Continued)
Temp vs Icc
13.5 11.5 9.5 7.5 pin23=2.5 5.5 -25 0 25 Temp [°C] 50 75 100 Iccm [mA] Icc [mA] 4 3 2 1 0 -25 0 25 50 Temp [°C] Vcc=13 Vpin23=2.5 75 100 6 5
Temp vs Iccm
Temp vs Vreg
5.25 5.15
Temp vs Isource
1500 1400 Isource [mA] 1300 1200 1100
Vcc=13 pin23=2.5 RL=4 -25 0 25 Temp [°C] 50 75 100
Vreg [V]
5.05 4.95 4.85 4.75 -25
0
25
50
75
100
1000
Temp [°C]
Temp vs Isink
1300 1250 1200 Isink [mA] 1150 1100 1050 1000 -25 0 25 50 Vcc=13V Temp=vari pin23=2.5 RL = 4 75 100
Temp [°C]
11
KA9258D
Test Circuits
50k 50k OPI + 470µF 1M SW17 V SW16 1k 1 0 0 SW9 2 4 V 16 OPIN(+) GND2 13 V 17 DO3.1 DO2.2 12 8 SW10 18 DO3.2 DO2.1 11 10µF + DR2 19 DI3.1 20 DI3.2 DR3 21 VCC1
DI2.2 10 DI2.1
1 + 10µF PC-V + 1000µF 10k Open 1M Short
0
2
10k SW15 SW14 1k 1
3 2
1
SW8 2 15
SW6 1
0 1 2 4
0
SW5 2
OPIN(-) OPOUT 14
4
SW7
+ 10µF
9 8
VCC
K A 9 2 5 8 D
GND
MUTE 1
SW4 2
22 VCC2 23 Vref 24 DI4.1 10µF + 25 DI4.2 26 DO4.1 8 SW13
MUTE
7 + 100µF
2.5V DR4
REO
6 5 KS8772 4 3 2 + 10µF
VREF
IL Pin 21, 22 DR1
DI1.2 DI1.1
27 DO4.2 DO1.2 28 GND3 4 1 SW11 0 2 1 4
8
DO1.1
SW3
1 V
2 4 SW12 0 1 SW1 0 2 SW2 4
12
KA9258D
Application Circuits
15 OPIN(-) 16 OPIN(+) 17 DO3.1 SLED MOTOR SPINDLE SERVO SLED BIAS VCC 22 VCC2 TRACKING AMP FOCUS TRACKING ACTUATOR 23 Vref 24 DI4.1 25 DI4.2 26 DO4.1 27 DO4.2 28 GND3 18 DO3.2 19 DI3.1 20 DI3.2 21 VCC1
OPOUT 14 GND2 13 DO2.2 12 DO2.1 11 DI2.2 10 SPINDLE MOTOR
K A 9 2 5 8 D
DI2.1 9 GND 8 MUTE OFF: HIGH ON: LOW 5V REG.OUT REO 6 VREF 5 DI1.2 4 DI1.1 3 DO1.2 2 DO1.1 1 FOCUS ACTUATOR VCC 22 UF
MUTE 7
104
Thermal Shut Down Circuit
The IC breaks down by over heating when overload condition continues for a long time. KA9258D has built-in thermal shut down circuit to prevent this case. When IC temperature rises over 175°C, the circuit operates and protects the IC from breakdown.
13
KA9258D
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.
www.fairchildsemi.com 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International
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
KA9258D
4-Channel Motor Driver
Features
· · · · · · · 1-phase, full-wave, linear DC motor driver Output gain adjustable Built in OP-amp Built in mute function Built in level shift circuit 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 loading motor of CD/CD-ROM/ DVD system, and can also drive spindle motor of CD 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 KA9258BD Package 28-SSOPH-375 Operating Temp. -40°C ~ +85°C -40°C ~ +85°C
KA9258BDTF 28-SSOPH-375
Rev. 1.0.1 February. 2000.
©2000 Fairchild Semiconductor International
1
KA9258D
1 27 2 3 4 5 6 7 26 25 DI4.2 24 DI4.1 23 22
28
DO1.1
GND3
Pin Assignments
DO1.2
DO4.2
DI1.1
DO4.2
DI1.2
REG
REO
VREF
MUTE
VCC2
FIN (GND)
KA9258D
GND1
DO2.1
DO2.2
GND2
OPOUT
FIN (GND)
2
21
8 9 10 DI2.2 11 12 13 14 DI2.1
VCC1
20 19 18 17 16 15
DI3.2
DI3.1
DO3.2
DO3.1
OPIN (+) OPIN (-)
KA9258D
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 I I I O O O I I O O I I I I I O O Drive output Drive output Drive input Drive input Regulator Regulator output Mute Ground 1 Drive input Drive input Drive output Drive output Ground 2 Op-amp output Op-amp input (-) Op-amp input (+) Drive output Drive output Drive input Drive input Supply voltage Supply voltage 2.5V bias voltage Drive input Drive input Drive output Drive output Ground 3 Pin Function Description
3
KA9258D
Internal Block Diagram
OPIN (-) 16 DO4.2 DO4.1 DO3.2 DO3.1 GND3 VREF VCC2 VCC1 DI4.2 DI4.1 DI3.2 DI3.1 OPIN(+) 15 - + 14 OPOUT
28
27
26
25 10k
24
23
22
21
20 10k
19
18
17
- Level shift - +
+ 10k
-
TSD 10k
+
- Level shift - +
+
Regulator 10k 50k - Level shift - + 10k 1 DO1.1 2 DO1.2 3 DI1.1 4 DI1.2 5 REG 6 REO 10k 7 MUTE 8 GND1 9 DI2.1 10k + Mute 50k 10k 10 DI2.2 11 DO2.1 10k +
DO2.2
4
GND2
-
-
+ Level shift - 12
+
13
KA9258D
Equivalent Circuits
Driver input Driver output
VCC
10k 2.5V
50 3 10 19 25 11.8k 1 2 11 12
17 18 26 27 50 4 100 9 0.58k VREF1 20 24 20k
Regulator
Regulator output
VCC VCC 53k 50 5
VCC 23k
VCC
VCC 2k 6 50 10k 10k 2k
10k
Mute input
Bias input
VCC 100k 50 7 50k 23 50
50k
5
KA9258D
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
Absolute Maximum Ratings (Ta = 25°C) °
Parameter Supply voltage Power dissipation Operating temperature Storage temperature Maximum output current Symbol VCC PD TOPR TSTG IOMAX Value 18 1.7note -40 ~ +85 -55 ~ +150 1 Unit V W °C °C A
Notes 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 Operating supply voltage Symbol VOPR Value 6 ~ 13.2 Unit V
6
KA9258D
Electrical Characteristics (Ta = 25°C) °
A. Regulator
Parameter Regulator output voltage Load regulation Line regulation Symbol VREG VRL VCC Conditions IL=100mA IL=0 ~ 200mA IL=200mA, VCC=6 ~ 9V Min. 4.75 -40.0 -10.0 Typ. 5 0 0 Max. 5.25 10.0 20.0 Units V mV mV
B. Drive
Parameter Quiescent circuit current Input offset voltage Output offset voltage Maximum sink current Maximum source current Maximum output voltage Closed loop voltage gain Ripple rejection ratio Slew rate Symbol ICCQ VOF VOO ISINK ISOURCE VOM AVF RR SR VI=0 RL=4, VCC RL=4, GND VI=2VRMS, 1kHz VI=0.1VRMS, 1kHz VI=-20dB, 120Hz 100Hz, Square wave Conditions Min. 5.5 -5.0 -30 0.5 0.5 2.5 4.5 60.0 1.0 Typ. 9.5 0 0 0.8 0.8 3.0 6.5 80.0 2.0 Max. 13.5 5.0 30 7.5 V / µs V dB A Units mA mV
C. OP AMP
Parameter 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 Common mode rejection ratio Symbol VOF1 IB1 VOH1 VOL1 ISINK1 ISOURCE1 GVO1 RR1 SR1 CMRR1 Conditions 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. -5 6 10 10 65 50 0.5 70 Typ. 40 50 78 70 1 84 Max. +5 300 1.8 Units mA nA V V mA mA dB dB V / µs dB
7
KA9258D
Application Information
1. MUTE
Pin #7 High Low Open
Mute circuit Turn-off Turn-on Turn-on
7
Output driver bias
· 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)
VREF BG Output driver bias
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 TR, Q11 is designed to turn-on at below voltage. VBE = VREF BG × R12 / (R11 + R12) = 460mV · When the chip temperature rises up to 175°C, then the turn-on voltage of the Q11 would drop down to 460mV. (Hysteresis: 25°C) Hence, the Q11 would turn on so the output circuit will be muted.
8
KA9258D
3. OP-AMP OP-amp is integrated in the IC for user's convenience.
AMP-I(+) 16 pin AMP -I(-) 15 pin
+ - 14 pin AMP-O
4. DRIVER
VREF (2.5V) 3 10 10k 4 9 24 100k 20
+ -
AMP Level shift
-I
+ -
Buffer -V M 1 2 12 18 26 Q4 +V
Q1
Q2
19 25 10k +I + - Buffer Q3
11 17 27
· 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 TR 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 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, 0.1µF between the supply voltage source. µ
VCC1 22 VCC2 21 104
6. Radiation fin is connecting to the internal GND of the package. Connect the fin to the external GND.
9
KA9258D
Typical Performance Characteristics
VCC vs. ICC
13.5 11.5
Imute [mA] Icc [mA]
VCC vs. Imute
10 8 6 4 2 0
9.5 7.5 5.5 4 6 8 10 12
VCC [V]
pin23=2.5
14
16
18
20
4
6
8
10
12
14
16
18
20
VCC [V]
VCC vs. Vreg
5.25 5.15 5.05 4.95 4.85 4.75 4 6 8 10 12
VCC [V]
VCC vs. Isink
1300 1100 Isink [mA] 900 700 pin23=2.5 500
Vreg [V]
pin23=2.5 RL=4 4 6 8 10
VCC [V]
14
16
18
20
12
14
VCC vs. Vreg
1400 7 1200 Isource [mA] 1000 800 600 400 4 6 8
VCC [V]
VCC vs. Isink
6 5 Avf [dB] 4 3 2 1 14 0 4 6 8 10 12 14 16 18 20
VCC [V]
pin23=2.5 RL=4 10 12
pin23=2.5 Vin=0.1Vrms f=1kHz RL=8
10
KA9258D
Typical Performance Characteristics (Continued)
Temp vs Icc
13.5 11.5 9.5 7.5 pin23=2.5 5.5 -25 0 25 Temp [°C] 50 75 100 Iccm [mA] Icc [mA] 4 3 2 1 0 -25 0 25 50 Temp [°C] Vcc=13 Vpin23=2.5 75 100 6 5
Temp vs Iccm
Temp vs Vreg
5.25 5.15
Temp vs Isource
1500 1400 Isource [mA] 1300 1200 1100
Vcc=13 pin23=2.5 RL=4 -25 0 25 Temp [°C] 50 75 100
Vreg [V]
5.05 4.95 4.85 4.75 -25
0
25
50
75
100
1000
Temp [°C]
Temp vs Isink
1300 1250 1200 Isink [mA] 1150 1100 1050 1000 -25 0 25 50 Vcc=13V Temp=vari pin23=2.5 RL = 4 75 100
Temp [°C]
11
KA9258D
Test Circuits
50k 50k OPI + 470µF 1M SW17 V SW16 1k 1 0 0 SW9 2 4 V 16 OPIN(+) GND2 13 V 17 DO3.1 DO2.2 12 8 SW10 18 DO3.2 DO2.1 11 10µF + DR2 19 DI3.1 20 DI3.2 DR3 21 VCC1
DI2.2 10 DI2.1
1 + 10µF PC-V + 1000µF 10k Open 1M Short
0
2
10k SW15 SW14 1k 1
3 2
1
SW8 2 15
SW6 1
0 1 2 4
0
SW5 2
OPIN(-) OPOUT 14
4
SW7
+ 10µF
9 8
VCC
K A 9 2 5 8 D
GND
MUTE 1
SW4 2
22 VCC2 23 Vref 24 DI4.1 10µF + 25 DI4.2 26 DO4.1 8 SW13
MUTE
7 + 100µF
2.5V DR4
REO
6 5 KS8772 4 3 2 + 10µF
VREF
IL Pin 21, 22 DR1
DI1.2 DI1.1
27 DO4.2 DO1.2 28 GND3 4 1 SW11 0 2 1 4
8
DO1.1
SW3
1 V
2 4 SW12 0 1 SW1 0 2 SW2 4
12
KA9258D
Application Circuits
15 OPIN(-) 16 OPIN(+) 17 DO3.1 SLED MOTOR SPINDLE SERVO SLED BIAS VCC 22 VCC2 TRACKING AMP FOCUS TRACKING ACTUATOR 23 Vref 24 DI4.1 25 DI4.2 26 DO4.1 27 DO4.2 28 GND3 18 DO3.2 19 DI3.1 20 DI3.2 21 VCC1
OPOUT 14 GND2 13 DO2.2 12 DO2.1 11 DI2.2 10 SPINDLE MOTOR
K A 9 2 5 8 D
DI2.1 9 GND 8 MUTE OFF: HIGH ON: LOW 5V REG.OUT REO 6 VREF 5 DI1.2 4 DI1.1 3 DO1.2 2 DO1.1 1 FOCUS ACTUATOR VCC 22 UF
MUTE 7
104
Thermal Shut Down Circuit
The IC breaks down by over heating when overload condition continues for a long time. KA9258D has built-in thermal shut down circuit to prevent this case. When IC temperature rises over 175°C, the circuit operates and protects the IC from breakdown.
13
KA9258D
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.
www.fairchildsemi.com 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International
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.