Datasheet KA3031 Datasheet (Fairchild Semiconductor)

KA3031

6-Channel Motor Drive IC

www.fairchildsemi.com

Features

• 4-CH balanced transformerless (BTL) driver

• 2-CH (forward-reverse) control DC motor driver

• Operating supply voltage (4.5V ~ 16V)

• Built-in thermal shut down circuit (TSD)

• Built-in under voltage lockout circuit (UVLO)

• Built-in over voltage protection circuit (OVP)

• Built-in mute circuit (CH1, CH2, CH3 and CH4)

• Built-in normal op-amp

• Built-in 5V regulator with reset

Description

The KA3031 is a monolithic integrated circuit suitable for a
6-ch motor driver which drives the tracking actuator, focus
actuator, sled motor, tray motor, change motor and spindle
motor of the CDP/CAR-CD systems.

48-QFPH-1414

Typical Applications

• Compact disk player (CDP) with tray and changer

• Compact disk player (VCD) with tray and changer

• Automotive compact disk player (CDP) with tray and
changer

• Mixing with compact disk player (CDP) and mini disk
player (MD) with tray and changer

• Other compact disk media

©2000 Fairchild Semiconductor International

Ordering Information

Device Package Operating Temp.

KA3031 48-QFPH-1414 −35°C ~ +85°C

Rev. 1.0.1

February. 2000.

1

KA3031

Pin Assignments

IN1.1 REG50 REG050 REF SVCC RES50 OPIN(+)OPIN(−)OPOUTPVCC2 DO1.1 DO1.2

48 47 46 45 44 43 42 41 40 39 38 37

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

OUT4

CTL1

1

2

3

4

5

6

DO2.1

36

35

DO2.2

PGND3

34

DO3.1

32

DO3.2

32

PGND2

31

KA3031

7

8

9

10

11

12

30

PGND1

DO4.1

29

DO4.2

28

DO5.1

27

26

DO5.2

DO6.1

25

13 14 15 16 17 18 19 20 21 22 23 24

FWD1 REV1 CTL FWD2 REV2 SGND MUTE1MUTE2 MUTE3 MUTE4 PVCC1DO6.2

2

Pin Definitions

Pin Number Pin Name I/O Pin Function Description

1 IN1.2 I CH 1 op-amp input (−)
2 OUT1 O CH 1 op-amp output
3 IN2.1 I CH 2 op-amp input (+)
4 IN2.2 I CH 2 op-amp input (−)
5 OUT2 O CH 2 op-amp output
6 IN3.1 I CH 3 op-amp input (+)
7 IN3.2 I CH 3 op-amp input (−)
8 OUT3 O CH 3 op-amp output

9 IN4.1 I CH 4 op-amp input (+)
10 IN4.2 I CH 4 op-amp input (−)
11 OUT4 O CH 4 op-amp output
12 CTL1 I CH 5 motor speed control
13 FWD1 I CH 5 forward input
14 REW1 I CH 5 reverse input
15 CTL2 I CH 6 motor speed control
16 FWD2 I CH 6 forward input
17 REW2 I CH 6 reverse input
18 SGND - Signal ground
19 MUTE1 I CH 1 mute
20 MUTE2 I CH 2 mute
21 MUTE3 I CH 3 mute
22 MUTE4 I CH 4 mute
23 PVCC1 - Power supply voltage (For CH 5, CH 6)
24 DO6.2 O CH 6 drive output
25 DO6.1 O CH 6 drive output
26 DO5.2 O CH 5 drive output
27 DO5.1 O CH 5 drive output
28 DO4.2 O CH 4 drive output
29 DO4.1 O CH 4 drive output
30 PGND - Power ground
31 PGND - Power ground
32 DO3.2 O CH 3 drive output
33 DO3.1 O CH 3 drive output
34 PGND - Power ground
35 DO2.2 O CH 2 drive output
36 DO2.1 O CH 2 drive output
37 DO1.2 O CH 1 drive output
38 DO1.1 O CH 1 drive output
39 PVCC2 - Power supply voltage (For CH 1, CH 2, CH 3, CH 4)

KA3031

3

KA3031

Pin Definitions (Continued)

Pin Number Pin Name I/O Pin Function Description

40 OPOUT O Opamp output
41 OPIN(−) I Opamp input (−)
42 OPIN(+) I Opamp input (+)
43 RES50 I Regulator 5V reset
44 SVCC - Signal supply voltage
45 REF I Bias voltage input
46 REG050 O Regulator 5V output
47 REG50 O Regulator output
48 IN1.1 I CH 1 opamp input (+)

4

Internal Block Diagram

1

IN1.2

2

OUT1

2.5V

KA3031

DO1.2DO1.1PVCC2OPOUTOPIN(−)OPIN(+)RES50SVCCREFREG050REG50IN1.1

373839404142434445464748

T.S.D

O.V.P

−

+

DO2.1

36

DO2.2

35

SW

−

+

ALL MUTE

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

OUT4

CTL1

3

4

5

6

7

8

9

10

11

12

+

−

+

−

+

−

+

−

−

+

−

+

−

+

−

+

MUTE4
MUTE3
MUTE2
MUTE1

S

W

S

W

+

−

+

−

+

−

+

−

M
S
C

M
S
C

−

+

−

+

−

+

−

+

−

+

−

+

−

+

−

+

+

D

−

D

+

D

−

D

2P

2P

2P

2P

2P

2P

2P

2P

2P

2P

2P

2P

PGND3

34

33

DO3.1

DO3.2

32

PGND2

31

PGND1

30

DO4.1

29

28

DO4.2

DO5.1

27

DO5.2

26

25

DO6.1

13 14 15 16 17 18 19 20 21 22 23 24

FWD1 REV1 CTL FWD2 REV2 SGND MUTE1 MUTE2 MUTE3 MUTE4 PVCC1 DO6.2

Notes:

1. SW = Logic switch

2. MSC = Motor speed control

3. D = Output driver

5

KA3031

Equivalent Circuits

Description Pin No. Internal circuit

Input
OPIN (+)
OPIN (−)

48, 3, 6, 9
1, 4, 7. 10

VCC VCC

48 3

6 9

10k

1 4
7 10

10k

4k

Input

2, 5, 8, 11

opout

CTL 12, 15

2 5
8 11

VCC

12 15

VCC

VCC

10k

0.1k

Vr

25k

100k

6

Equivalent Circuits (Continued)

Description Pin No. Internal circuit

Logic drive
FWD input

REV input

13, 16
14, 17

VCC

KA3031

CH mute 19, 20

21, 22

Logic

drive

24, 25
26, 27

output

13 6
14 17

19 20
21 22

24 25
26 27

VCC

30k

30k

VCC

10k

30k

2k

1k

4-CH

drive

output

28, 29
32, 33
35, 36
37, 38

28 29
32 33
35
37 38

20k

36

1k

Vr

VCC

10k

10k

1k

7

KA3031

Equivalent Circuits (Continued )

Description Pin No. Internal circuit

Normal

opout

40

VCC

VCC

Normal
OPIN(+)
OPIN(−)

Ref 45

42
41

40

VCC VCC

41

50

50

42

5k

VCC

45

0.1k

2k

8

Equivalent Circuits (Continued )

Description Pin No. Internal circuit

RES50 43

VCC

KA3031

REG050 46

REG50 47

10k

50k

VCC

50k

2k 2k

10k

VCC

43

VCC

41

53k

47

10k

9

KA3031

Absolute Maximum Ratings (Ta = 25°°°°C)

Parameter Symbol Value Unit

Maximum supply voltage V
Power dissipation P
Operating temperature T
Storage temperature T
Maximum output current I

NOTE:

1. When mounted on 70mm × 70mm × 1.6mm PCB.

2. Power dissipation reduces 16mW / °C for using above Ta=25°C.

3. Do not exceed Pd and SOA.

CC

D
OPR
STG

OMAX

18 V

note

3

−35 ~ +85 °C

−55 ~ +150 °C

1A

Power Dissipation Curve

Pd (mW)

3,500

2,500

W

1,500

0

0 25 50 75 100 125 150 175

Recommended Operating Conditions (Ta = 25°°°°C)

Parameter Symbol Min. Typ. Max. Unit

Operating supply voltage V

CC

4.5 - 16 V

Ambient temperature, Ta [°C]

10

Electrical Characteristics

(SVCC=PV

Quiescent circuit current I
All mute on current I
All mute on voltage V
All mute off voltage V
CH mute on voltage V
CH mute off voltage V

DRIVER PART (R

Input offset voltage V
Output offset voltage V
Maximum output voltage 1 V
Maximum output voltage 2 V
Closed-loop voltage gain A
Ripple rejection ratio RR V
Slew rate SR Square, Vout=2Vp-p, f=120kHz - 0.8 - V/µs

NORMAL OPAMP PART

Input offset voltage V
Input bias current I
High level output voltage V
Low level output voltage V
Output sink current I
Output source current I
Open loop voltage gain GV
Ripple rejection ratio RR1 V
Slew rate SR1 - - 1 - V/µs
Common mode rejection ratio CMRR1 - - 80 - dB

CC1

=PV

=8V, Ta=25°C, unless otherwise specified)

CC2

Parameter Symbol Conditions Min. Typ. Max. Units

under no-load 9 12 16 mA
Pin 45=GND - 6 10 mA
Pin 45=Variation - - 0.5 V
Pin 45=Variation 2 - - V
Pin 19, 20, 21, 22=Variation 2 - - V
Pin 19, 20, 21, 22=Variation - - 0.5 V

- −20 - +20 mV
VIN=2.5V −50 - +50 mV
VCC=8V, RL=8Ω 4.0 5.5 - V
VCC=13V, RL=24Ω 79-V
VIN=0.1V

=0.1V

IN

RMS

, f=120kHz - 50 - dB

RMS

9 10.5 12 dB

- −10 - +10 mV

- - - 300 nA
RL=50Ω 66.8- V
RL=50Ω -1.01.8V
VIN=−75dB, f=1kHz 10 40 - mA

=−20dB, f=120kHz 10 40 - mA

Square, Vout=2Vp-p, f=120kHz - 75 - dB

=−20dB, f=1kHz - 65 - dB

IN

=8ΩΩΩΩ)

L

CC

MUTE ALL

MON ALL

MOFF ALL

MON CH

MOFF CH

IO

OO
OM1
OM2

VF

OF1

B1
OH1

OL1

SINK1

SOURCE1VIN

O1

KA3031

11

KA3031

Electrical Characteristics (Continued)

(SVCC=PV

INPUT OPAMP PART

Input offset voltage V
Input bias current I
High level output voltage V
Low level output voltage V
Output sink current I
Output source current I
Open loop voltage gain GV
Slew rate SR2 Square, Vout=2Vp-p, f=120kHz - 1 - V/µs
Common mode rejection ratio CMRR2 V

5V REGULATOR PART

Regulator output voltage Vreg I
Load regulation ∆V
Line regulation ∆V
Reset on voltage Reson - - - 0.5 V
Reset off voltage Resoff - 2 - - V

TRAY, CHANGER DRIVER PART (R

Input high level voltage V
Input low level voltage V
Output voltage 1 V
Output voltage 2 V
Output load regulation ∆V
Output offset voltage 1 V
Output offset voltage 2 V

CC1

=PV

=8V, Ta=25°C, unless otherwise specified)

CC2

Parameter Symbol Conditions Min. Typ. Max. Units

OF2

B2
OH2
OL2

SINK2

SOURCE2

O2

R1

CC

=45ΩΩΩΩ)

L

IH

IH
O1
O2

R1
OO1
OO2

VIN=−75dB, f=1kHz - 80 - dB

=−20dB, f=1kHz - 80 - dB

IN

=100mA 4.75 5 5.25 V

L

IL=0→200mA −40 0 +10 mV
IL=200mA, VCC=6V→9V −20 0 +30 mV

VCC=8V, V
VCC=13V, V

VIN=5V, 5V −10 - +10 mV
VIN=0V, 0V −10 - +10 mV

- −10 - +10 mV

- - - 400 nA

-77.7-V

--0.20.5V

- 500 800 - µA

- 500 800 - µA

-2--V

---0.5V
=3.5V 5.2 6.0 6.8 V

CTL

=4.5V 7.5 8.5 9.5 V

CTL

- - 300 700 mV

12

KA3031

Application Information

1. REFERENCE INPUT & ALL MUTE FUNCTION

Pin 45 (REF) can use the reference Input pin or the all mute signal input pin.

• Reference input
In the case of the reference input pin, you must keep the applied voltage range between 2[V] and 6.5[V] at
V

= 8[V].

CC

• All mute input
When using the all mute function pin, applied voltage condition is as follows.

All mute on voltage Below 0.5[V] Mute function operation
All mute off voltage Above 2[V] Normal operation

2. SEPARATED CHANNEL MUTE FUNCTION

These pins are used for individual channel mute operation.

• When the mute pins (pin19, 20, 21 and 22) are high level, the mute circuits are activated so that the output circuit is muted.

• When the voltage of the mute pins (pin19, 20, 21 and 22) are low level, the mute circuit is stopped and output circuits
operate normally.

• If the chip temperature rises above 175°C, then the thermal shutdown (TSD) circuit is activated and the output circuits are
muted.

- Mute 1 (pin 19)-CH1 mute control input pin.

- Mute 2 (pin 20)-CH2 mute control input pin.

- Mute 3 (pin 21)-CH3 mute control input pin.

- Mute 4 (pin 22)-CH4 mute control input pin.

3. PROTECTION FUNCTION

• Thermal shutdown (TSD)
If the chip temperature rises above 175°C, then the thermal shutdown (TSD) circuit is activated and the output circuit is will
be mute. The TSD circuit is temperature hysteresis 25°C.

• Under voltage lockout (UVLO) and over voltage protection (OVP)
It is designed to mute-operate the internal bias by the function of UVLO and OVP, when the power supply voltage falls
below 3.5[V] or above 20[V].

13

KA3031

4. REGULATOR & RESET FUNCTION

The regulator and reset circuits are as illustrated in Figure 1.
where R1=R2.

• The external circuit is composed of the transistor, KSB772 and a capacitor, about 33[µF]. The capacitor is used as a ripple
eliminator and should have good temperature characteristics.

• The regulator output voltage (pin 46) is decided as follows.
Vout = 2 × 2.5 = 5[V] (where R1 = R2)

• When the voltage of pin 43 (Vreset) is at 5[V], the regulator output voltage (pin 46) because 5[V]. If the voltage
of pin 43 is 0[V], the output voltage of pin 46 because 0[V].

V

CC

KSB772

2.5V

REG OUT

+

−

33µF

+

R1

R2

Figure 1. Regulator circuit

Vreset

3943444647

KA3031

14

5. FOCUS, TRACKING ACTUATOR, SPINDLE, SLED MOTOR DRIVE PART

M

KA3031

Rfeed2 Rfeed2

AP2 AP3

-

IC

Rref2

−

LEVEL

+

45

−

Vref

+

36948

Vr

AP1

+

Vin

SHIFT

−

BF
+

+

+

Rref1

−

−

Rref2

Rfeed1

25811

14710

• The voltage, Vref is the reference voltage given by the external bias voltage of the pin 45.

• The input signal (Vin) through pins 3, 6, 9 and 48 is amplified one times (Rref1 = Rfeed1) by the AP1 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 are fed into the output amplifier, where output amplifier (AP2, 3) gain is two times (all
Rref2 = Rfeed2).

• If you desire to change the gain, the input buffer amplifier (BF) can be used.

• The output stage is the balanced transformerless (BTL) driver.

• The bias voltage Vr is expressed as below;

V

–

CCVBE

--------------------------- -

Vr

V[]=

2

15

KA3031

6. TRAY, CHANGE MOTOR DRIVE PART

out 1 out 2

24 26 25 27

CTL1, 2

12 15

FWD REV

13 16 14 17

D

LEVEL SHIFT

M.S.C

S.W

IN

M

D

IN

• Rotational direction control
The forward and r everse rotation al direc tion is controll ed by FWD (pi n 13, 16) a nd REV (pin 14, 17 ) input conditi ons are as
follows.

INPUT OUTPUT

FWD REV OUT 1 OUT 2 State

H H Vr Vr Brake
HLHLForward

LHLHReverse
L L Vr Vr Brake

• where Vr is (Vcc - Vbe) / 2 = 3.65V (at Vcc=8V)

• where Out1 p ins are pins 24 a nd 26, and out2 pins aer pins 25 and 27

• Motor speed control

- The almost maximum torque is obtained when it is used with the pins 12 and 15 (CTL1, 2) open.

- If the torque of the motor is too low, then the applied voltage at pins 12 and 15 (CTL1, 2) are 0[V].

- When motor speed controlled, the applied voltage of the pins 12 and 15 ( CTL1, 2) is between 0 and 4V.

Also, if the s peed control is constant, the applied voltage of the p ins 12 and 15 (CTL1, 2) is betwe en 4 and
5V.

- This IC's applied maximum voltage is 6V when V

- You must not use the applied CTL1, 2 voltage above 5.8V when V

CC

is 8V.

is 8V, and 3V when VCC is 5V.

CC

16

Typical Performance Characteristics

Total circuit

KA3031

Icc(mA) Icc(mA)

14

13.5

13

12.5

12

11.5

<Vcc vs Icc>

Vcc=Var.
Temp=25 °C

11

5 6 7 8 9 10 11 12 13 14

Vcc(V)

Focus, Tracking, Spindle, Sled drive part

Vom(V)

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0
4 5 6 7 8 9 10 11 12 13

Vout(V)

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

0.2 0.4 0.6 0.8 1 12 14

<Vcc vs Vom>

Vcc=Vari.
Temp=25 °C
RL=8Ω

Vcc(V)

<Vin vs Vout>

Vcc=8V
Temp=25 °C
RL=8Ω
Vin= Var.

VIN (V)

13.4

13.2

13.0

12.8

12.6

12.4

12.2

12.0

11.8

11.6

11.4

-30 -10 0 10 30 40 50 60 70 80

<Temp vs Icc>

Vcc=8V
Temp= Var.

Avf(dB)

12.0

10.0

8.0

6.0

<Vcc vs Avf>

Vcc=Var.

4.0

Temp=25 °C
RL=8Ω

2.0

Vin=0.1Vrms
f=1KHz

0.0
4 5 6 7 8 9 10 11 12 13

Avf(dB)

10.9

10.8

10.7

10.6

<Temp vs Avf>

Vcc=8V

10.5

temp= Va r .
RL=8Ω

10.4

Vin=0.1Vrms
f=1KHz

10.3

-30 -10 0 10 30 40 50 60 70 80

Temp(°C)

Vcc(V)

Temp(°C)

17

KA3031

Typical Performance Characteristics (Continued)

Vom(V)

5.52

5.50

5.48

5.46

5.44

5.42

5.40

5.38

5.36

5.34

5.32

-30 -10 0 10 30 40 50 60 70 80

Tray, Change drive part

Vo (V)

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0
4 5 6 7 8 9 10 11 12 13

<Temp vs Vom>

<Vcc vs Vo>

Vcc=8V
temp= Var.

Ω

RL=8

Temp (°C)

Vcc=Var.
Temp=25 °C
RL=45Ω
Vin=5V/0V
Vctl=3.5V

Vo (V)

6.1

6.0

5.9

5.8

5.7

5.6

5.5

5.4

-30 -10 0 10 30 40 50 60 70 80

Vcc(V)

<Temp vs Vo>

Vcc=8V
temp= Var.

Ω

RL=45
Vin=5V/0V
Vctl=3.5V

Temp (°C)

Vo (V)

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

<Vctl vs Vo>

Vcc=8V
Temp=25 °C
RL=45Ω
Vin= 5V/0V
Vctl= Var.

Vctl(V)

Vo (V)

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

<Vctl vs Vo>

18

Vcc=8V
Temp=25 °C

Ω

RL=8
Vin= 5V/0V
Vctl= Var.

Vctl(V)

Typical Performance Characteristics (Continued)

Regulator part

Vreg (V) Vreg (V)

6.0

5.0

4.0

3.0

2.0

1.0

<Vcc vs Vreg> <Temp vs Vreg>

Vcc=Var.
Temp=25 °C
IL=100mA

5.08

5.06

5.04

5.02

5.00

4.98

4.96

KA3031

Vcc=8V
Temp=Var.
IL=100mA

0.0
4 5 6 7 8 9 10 11 12 13

Normal Op Amp part

Isou1(mA)

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

4 5 6 7 8 9 10 11 12 13

GVo1(dB)

86.0

84.0

82.0

80.0

78.0

76.0

74.0

72.0

70.0

68.0
4 5 6 7 8 9 10 11 12 13

<Vcc vs Isource>

Vcc=Var.
Temp=25 °C
RL=1KΩ
Vin=100uVp_p
f=1KHz

Vcc=Var.
Temp=25 °C
RL=50Ω

Vcc(V)

Vcc(V)

Vcc(V)

4.94

- 30 - 10 0 10 30 40

50 60 70 80

Isink1(mA)

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0
4 5 6 7 8 9 10 11 12 13

<Vcc vs Isink>

Vcc=Var.
Temp=25 °C
RL=50Ω

Isou1(mA)

59.0

58.0

57.0

56.0

55.0

54.0

53.0

52.0

51.0

-30 -10 0 10 30 40 50 60 70 80

<Temp vs Isource><Vcc vs Open loop voltage gain>

Vcc=8V
Temp=Var.
RL=50Ω

Temp (°C)

Vcc(V)

Temp (°C)

19

KA3031

Typical Performance Characteristics (Continued)

Isink1(mA)

60.0

50.0

40.0

30.0

20.0

10.0

0.0

-30 -10 0 10 30 40 50 60 70 80

Input Op Amp part

Isou2(uA) Isink2(uA)

2500

2000

1500

1000

500

0

4 5 6 7 8 9 10 11 12 13

GVo2(uA)

83
82
81
80
79
78
77
76
75
74
73

4 5 6 7 8 9 10 11 12 13

<Vcc vs Open loop voltage gain>

<Temp vs Isink>

Vcc=8V
temp=VAR
RL=50Ω

Temp (°C)

<Vcc vs Isource> <Vcc vs Isink>

Vcc=Var.
Temp=25 °C
RL=1KΩ

1600
1400
1200
1000

800
600
400
200

0

4 5 6 7 8 9 10 11 12 13

Vcc(V)

Vcc=Var.
Temp=25 °C
RL=1KΩ

Vcc(V)

Vcc=Var.
Temp=25 °C
RL=1KΩ

Vcc(V)

20

Test Circuits

KA3031

OPIN (+)
OPIN (−)

OPOUT

OPIN (+)
OPIN (−)

OPOUT

OPIN (+)
OPIN (−)

OPOUT

OPIN (+)
OPIN (−)

OPOUT

KSB772

REG OUT

IL

IN1.2

10

11

CTL1

12

CTL1

IN1A IN1B CTL2IN2A IN2B

+

1

IN1.1

2

OUT1

3

IN2.1

4

IN2.2

5

OUT2
IN3.1

6

IN3.2

7

OUT3

8
9

IN4.1

IN4.2
OUT4

FWD1

13 14 15 16 17 18 19 20 21 22 23 24

33µF

REG50

REV1

REG050

CTL

SW1

REF

FWD2

Vref

2.5V

1

All
mute

2

SVCC

REV2

Ripple

1000µF

Vreset

RES50

KA3031

SGND

V

CC

+

O

O

OPIN(−)

MUTE2

O

P

P

I

I

N

N

(+)

(−

−−

−)

OPOUT

MUTE3

P
O
U
T

PVCC2

MTUE4

RL

373839404142434445464748

DO1.1

DO2.2

PGND3

DO3.1
DO3.2

PGND2

PGND1

DO4.1

DO4.2
DO5.1
DO5.2

PVCC1

DO1.2

DO6.2

DO2.1

36
35

34

33
32

31

30
29

28
27

26

DO6.1

25

RL

IL IL

RL

RL

RL

RL

IL

IL

~

+

100µF

1

2

20

OPIN(+)

MUTE1

opamp part

1M

A

OPIN(+)

1

~

SW3
2

OPIN(−)

1

2

SW7

B

10µF

4

3

1M

1

OPOUT

1k

SW5

1

D

50

SW6

1

CC

2

V

CC

2

V

21

KA3031

Application Circuits

Voltage Mode Control

REG OUT

IN1.2

33µF

1

2
3
4

5
6

KSB772

+

IN1.1

OUT1

IN2.1
IN2.2
OUT2
IN3.1

REG50

REF

REG050

Vreset

SVCC

RES50

VCC

FOCUS

373839404142434445464748

DO2.1

36

DO1.1
DO2.2

PGND3

DO3.1
DO3.2

PGND2

DO1.2

35
34

33
32
31

PVCC2

OPOUT

OPIN(−)

OPIN(+)

TRACKING

SPINDLE

M

REF &

ALL

MUTE

7

IN3.2
OUT3

8
9

IN4.1

10

IN4.2

11

OUT4

CTL1

12

FWD1

REV1

TRAT

CTL

CONTROL

TY CG

13 14 15 16 17 18 19 20 21 22 23 24

FOCUS

TRACKING

INPUT

[SERVO PRE AMP] [CONTROLLER]

INPUT

SPINDLE

INPUT

SLED

INPUT

INPUT

FWD2

REV2

CHANGE

INPUT

KA3031

SGND

Where TY is tray motor .

MUTE1

MUTE2

MUTE3

CG is change motor

PGND1

DO4.1

DO4.2
DO5.1
DO5.2

MTUE4

PVCC1

30
29

28
27

26

DO6.1

25

DO6.2

SLED MUTE
SPINDLE MUTE
TRACKING MUTE
FOCUS MUTE

M

M

M

SLED

TRAY

CHANGE

Notes:

Radiation pin is connected to the internal GND of the package.
Connect the pin to the external GND.

22

Application Circuits

Differential Mode Control

KA3031

VCC

REF &

ALL

MUTE

REG OUT

IN1.2

CTL1

KSB772

33µF

1

2
3
4

5
6

IN1.1

OUT1

IN2.1
IN2.2
OUT2
IN3.1

+

REG50

REG050

REF

Vreset

SVCC

RES50

OPIN(+)

OPOUT

OPIN(−)

KA3031

IN3.2

7

OUT3

8

IN4.1

9

IN4.2

10

OUT4

11
12

FWD1

REV1

CTL

FWD2

REV2

13 14 15 16 17 18 19 20 21 22 23 24

SGND

MUTE1

MUTE2

MUTE3

FOCUS

PVCC2

PGND3

PGND2

PGND1

MTUE4

373839404142434445464748

DO1.1
DO2.2

DO3.1
DO3.2

DO4.1

DO4.2
DO5.1
DO5.2

PVCC1

DO2.1

36

DO1.2

35
34

33
32
31

30
29

28
27

26
25

DO6.2

DO6.1

TRACKING

SPINDLE

M

M

SLED

TRAY

M

M

CHANGE

PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 PWM8

FOCUS TRACKING SPINDLE SLED

[SERVO PRE AMP] [CONTROLLER]

TRAT

INPUT

CONTROL

TY CG

CHANGE

INPUT

23

Where TY is tray motor.

CG is change motor

SLED MUTE
SPINDLE MUTE
TRACKING MUTE
FOCUS MUTE

KA3031

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D 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 IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.

LIFE SUPPORT POL I CY

FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
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

2. A critical component in any component of a life support
device or sy stem whose fai lure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec t iv ene ss .

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

 2000 Fairchild Semiconductor International

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