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Rev. 1.0.1

February. 2000.

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

Ordering Information

Device

Package

Operating Temp.

KA3031

48-QFPH-1414

C ~ +85

KA3031

6-Channel Motor Drive IC

KA3031

Pin Assignments

KA3031

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

OUT4

CTL1

DO2.1

DO2.2

PGND3

DO3.1

DO3.2

PGND2

PGND1

DO4.1

DO4.2

DO5.1

DO5.2

DO6.1

FWD1 REV1

CTL FWD2 REV2 SGND

MUTE1MUTE2 MUTE3 MUTE4 PVCC1 DO6.2

IN1.1 REG50 REG050 REF SVCC RES50

OPIN(+)OPIN(

)OPOUT PVCC2 DO1.1 DO1.2

KA3031

Pin Definitions

Pin Number

Pin Name

I/O

Pin Function Description

IN1.2

CH 1 op-amp input (

)

OUT1

CH 1 op-amp output

IN2.1

CH 2 op-amp input (+)

IN2.2

CH 2 op-amp input (

)

OUT2

CH 2 op-amp output

IN3.1

CH 3 op-amp input (+)

IN3.2

CH 3 op-amp input (

)

OUT3

CH 3 op-amp output

IN4.1

CH 4 op-amp input (+)

IN4.2

CH 4 op-amp input (

)

OUT4

CH 4 op-amp output

CTL1

CH 5 motor speed control

FWD1

CH 5 forward input

REW1

CH 5 reverse input

CTL2

CH 6 motor speed control

FWD2

CH 6 forward input

REW2

CH 6 reverse input

SGND

Signal ground

MUTE1

CH 1 mute

MUTE2

CH 2 mute

MUTE3

CH 3 mute

MUTE4

CH 4 mute

PVCC1

Power supply voltage (For CH 5, CH 6)

DO6.2

CH 6 drive output

DO6.1

CH 6 drive output

DO5.2

CH 5 drive output

DO5.1

CH 5 drive output

DO4.2

CH 4 drive output

DO4.1

CH 4 drive output

PGND

Power ground

PGND

Power ground

DO3.2

CH 3 drive output

DO3.1

CH 3 drive output

PGND

Power ground

DO2.2

CH 2 drive output

DO2.1

CH 2 drive output

DO1.2

CH 1 drive output

DO1.1

CH 1 drive output

PVCC2

Power supply voltage (For CH 1, CH 2, CH 3, CH 4)

KA3031

Pin Definitions (Continued)

Pin Number

Pin Name

I/O

Pin Function Description

OPOUT

Opamp output

OPIN(

)

Opamp input (

)

OPIN(+)

Opamp input (+)

RES50

Regulator 5V reset

SVCC

Signal supply voltage

REF

Bias voltage input

REG050

Regulator 5V output

REG50

Regulator output

IN1.1

CH 1 opamp input (+)

KA3031

Internal Block Diagram

Notes:
1. SW = Logic switch
2. MSC = Motor speed control
3. D = Output driver

MUTE4
MUTE3
MUTE2
MUTE1

ALL MUTE

T.S.D

O.V.P

2.5V

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

OUT4

CTL1

DO2.1

DO2.2

PGND3

DO3.1

DO3.2

PGND2

PGND1

DO4.1

DO4.2

DO5.1

DO5.2

DO6.1

FWD1

REV1

CTL

FWD2

REV2

SGND

MUTE1 MUTE2 MUTE3 MUTE4 PVCC1 DO6.2

DO1.2

DO1.1

PVCC2

OPOUT

OPIN(

)

OPIN(+)

RES50

SVCC

REF

REG050

REG50

IN1.1

KA3031

Equivalent Circuits (Continued)

Description

Pin No.

Internal circuit

Logic drive

FWD input

REV input

13, 16
14, 17

CH mute

19, 20
21, 22

Logic

drive

output

24, 25
26, 27

4-CH

drive

output

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

VCC

13 6
14 17

30k

VCC

19 20

21 22

30k

24 25
26 27

20k

VCC

10k

28 29
32 33
35
37 38

10k

VCC

10k

KA3031

Absolute Maximum Ratings

(Ta = 25

°
°
°
°

NOTE:
1. When mounted on 70mm

70mm

1.6mm PCB.

2. Power dissipation reduces 16mW /

C for using above Ta=25

3. Do not exceed Pd and SOA.

Power Dissipation Curve

Recommended Operating Conditions

(Ta = 25

°
°
°
°

Parameter

Symbol

Value

Unit

Maximum supply voltage

Power dissipation

note

Operating temperature

OPR

35 ~ +85

Storage temperature

STG

55 ~ +150

Maximum output current

OMAX

Parameter

Symbol

Min.

Typ.

Max.

Unit

Operating supply voltage

4.5

3,500

2,500

1,500

100

125

150

175

Pd (mW)

Ambient temperature, Ta [

KA3031

Electrical Characteristics

(SV

=PV

CC1

=PV

CC2

=8V, Ta=25

C, unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Quiescent circuit current

under no-load

All mute on current

MUTE ALL

Pin 45=GND

All mute on voltage

MON ALL

Pin 45=Variation

0.5

All mute off voltage

MOFF ALL

Pin 45=Variation

CH mute on voltage

MON CH

Pin 19, 20, 21, 22=Variation

CH mute off voltage

MOFF CH

Pin 19, 20, 21, 22=Variation

0.5

DRIVER PART (R

)

Input offset voltage

+20

Output offset voltage

=2.5V

+50

Maximum output voltage 1

OM1

=8V, R

4.0

5.5

Maximum output voltage 2

OM2

=13V, R

=24

Closed-loop voltage gain

=0.1V

RMS

10.5

Ripple rejection ratio

=0.1V

RMS

, f=120kHz

Slew rate

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

0.8

NORMAL OPAMP PART
Input offset voltage

OF1

+10

Input bias current

300

High level output voltage

OH1

=50

6.8

Low level output voltage

OL1

=50

1.0

1.8

Output sink current

SINK1

75dB, f=1kHz

Output source current

SOURCE1

20dB, f=120kHz

Open loop voltage gain

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

Ripple rejection ratio

RR1

20dB, f=1kHz

Slew rate

SR1

Common mode rejection ratio

CMRR1

KA3031

Electrical Characteristics (Continued)

(SV

=PV

CC1

=PV

CC2

=8V, Ta=25

C, unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

INPUT OPAMP PART
Input offset voltage

OF2

+10

Input bias current

400

High level output voltage

OH2

7.7

Low level output voltage

OL2

0.2

0.5

Output sink current

SINK2

500

800

Output source current

SOURCE2

500

800

Open loop voltage gain

75dB, f=1kHz

Slew rate

SR2

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

Common mode rejection ratio

CMRR2

20dB, f=1kHz

5V REGULATOR PART
Regulator output voltage

Vreg

=100mA

4.75

5.25

Load regulation

200mA

+10

Line regulation

=200mA, V

=6V

+30

Reset on voltage

Reson

0.5

Reset off voltage

Resoff

TRAY, CHANGER DRIVER PART (R

=45

)

Input high level voltage

Input low level voltage

0.5

Output voltage 1

=8V, V

CTL

=3.5V

5.2

6.0

6.8

Output voltage 2

=13V, V

CTL

=4.5V

7.5

8.5

9.5

Output load regulation

300

700

Output offset voltage 1

OO1

=5V, 5V

+10

Output offset voltage 2

OO2

=0V, 0V

+10

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].

· All mute input

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

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

· 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].

All mute on voltage

Below 0.5[V]

Mute function operation

All mute off voltage

Above 2[V]

Normal operation

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[

F]. 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].

Figure 1. Regulator circuit

KSB772

REG OUT

2.5V

Vreset

KA3031

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

· 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;

8 11

7 10

9 48

Vin

Vref

Rref1

AP1

Rfeed1

LEVEL

SHIFT

Rref2

AP2

AP3

Rfeed2

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

[ ]

KA3031

6. TRAY, CHANGE MOTOR DRIVE PART

· Rotational direction control

The forward and reverse rotational direction is controlled by FWD (pin 13, 16) and REV (pin 14, 17) input conditions are as
follows.

· where Vr is (Vcc - Vbe) / 2 = 3.65V (at Vcc=8V)
· where Out1 pins are pins 24 and 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 speed control is constant, the applied voltage of the pins 12 and 15 (CTL1, 2) is between 4 and
5V.

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

is 8V.

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

is 8V, and 3V when V

is 5V.

INPUT

OUTPUT

FWD

REV

OUT 1

OUT 2

State

Brake

Forward

Reverse

Brake

out 1

out 2

LEVEL SHIFT

M.S.C

S.W

CTL1, 2

FWD

REV

KA3031

Typical Performance Characteristics

Total circuit

Focus, Tracking, Spindle, Sled drive part

11.5

12.5

13.5

Icc(mA)

Vcc(V)

Vcc=Var.
Temp=25

11.4

11.6

11.8

12.2

12.4

12.6

12.8

13.0

12.0

13.2

13.4

Temp(

Vcc=8V
Temp= Var.

-30

-10

(V)

Temp(

Vom(V)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

Vcc=Vari.
Temp=25

RL=8

Vcc(V)

0.0

2.0

4.0

6.0

8.0

10.0

12.0

Avf(dB)

Vcc=Var.
Temp=25

RL=8

Vin=0.1Vrms
f=1KHz

Vcc(V)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0.2

0.4

0.6

0.8

Vout(V)

Vcc=8V
Temp=25

RL=8

Vin= Var.

10.3

10.4

10.5

10.6

10.7

10.8

10.9

Vcc=8V
temp= Var.
RL=8

Vin=0.1Vrms
f=1KHz

-30

-10

KA3031

Typical Performance Characteristics (Continued)

Tray, Change drive part

Vom(V)

5.32

5.34

5.36

5.38

5.42

5.44

5.46

5.48

5.50

5.40

5.52

Temp (

Vcc=8V
temp= Var.
RL=8

-30

-10

Temp (

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

Vo (V)

Vcc=Var.
Temp=25

RL=45

Vin=5V/0V
Vctl=3.5V

Vcc(V)

5.4

5.5

5.6

5.7

5.8

5.9

6.0

6.1

Vo (V)

Vcc=8V
temp= Var.
RL=45

Vin=5V/0V
Vctl=3.5V

Vo (V)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0.5

1.5

2.5

3.5

4.5

Vcc=8V
Temp=25

RL=45

Vin= 5V/0V
Vctl= Var.

Vctl(V)

Vo (V)

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0.5

1.5

2.5

3.5

4.5

Vcc=8V
Temp=25

RL=8

Vin= 5V/0V
Vctl= Var.

Vctl(V)

-30

-10

KA3031

Typical Performance Characteristics (Continued)

Regulator part

Normal Op Amp part

0.0

1.0

2.0

3.0

4.0

5.0

6.0

Vcc=Var.
Temp=25

IL=100mA

Vcc(V)

4.94

4.96

4.98

5.00

5.02

5.04

5.06

5.08

- 30

- 10

Temp (

Vreg (V)

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

-30

-10

Temp (

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

Isou1(mA)

Isink1(mA)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

Vcc(V)

68.0

70.0

72.0

74.0

76.0

78.0

80.0

82.0

84.0

86.0

GVo1(dB)

Vcc(V)

51.0

52.0

53.0

54.0

55.0

56.0

57.0

58.0

59.0

Vcc=8V
Temp=Var.
RL=50

Vcc=Var.
Temp=25

RL=50

Vcc=Var.
Temp=25

RL=1K

Vin=100uVp_p
f=1KHz

Vcc=Var.
Temp=25

RL=50

KA3031

Typical Performance Characteristics (Continued)

Input Op Amp part

0.0

10.0

20.0

30.0

40.0

50.0

60.0

-30

-10

Temp (

Vcc=8V
temp=VAR
RL=50

Isink1(mA)

500

1000

1500

2000

2500

Isou2(uA)

Isink2(uA)

Vcc(V)

200

400

600

800

1000

1200

1400

1600

GVo2(uA)

Vcc=Var.
Temp=25

RL=1K

Vcc=Var.
Temp=25

RL=1K

Vcc=Var.
Temp=25

RL=1K

KA3031

Test Circuits

OPIN (+)

OPIN (

)

OPOUT

OPIN (+)

OPIN (

)

OPOUT

OPIN (+)

OPIN (

)

OPOUT

OPIN (+)

OPIN (

)

OPOUT

)

(

-
-
-
-

)

KSB772

REG OUT

Vreset

SW1

Ripple

All

Vref

2.5V mute

IN1A IN1B CTL2 IN2A IN2B

CTL1

100

1000

OPIN(+)

OPIN(

)

OPOUT

SW3

SW7

SW5

SW6

opamp part

KA3031

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

OUT4

CTL1

REV1

CTL

REV2

SGND

MUTE1

MUTE2

MUTE3

MTUE4

PVCC1

DO6.

DO6.1

DO5.2

DO5.1

DO4.2

DO4.1

PGND1

PGND2

DO3.2

DO3.1

PGND3

DO2.2

DO2.1

.
1

REG0

REF

SVCC

RES

I
N

(
+

)

OPI

(

)

OPOUT

PVCC2

DO1.

KA3031

Application Circuits

Voltage Mode Control

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

KSB772

REG OUT

Vreset

VCC

TRACKING

FOCUS

SPINDLE

SLED

TRAY

CHANGE

SLED MUTE
SPINDLE MUTE
TRACKING MUTE
FOCUS MUTE

TRAT

INPUT

CONTROL

TY CG

CHANGE

INPUT

REF &

ALL

MUTE

FOCUS

INPUT

TRACKING

INPUT

SPINDLE

INPUT

SLED

INPUT

[SERVO PRE AMP]

[CONTROLLER]

Where TY is tray motor.

CG is change motor

KA3031

.
1

REG50

REG050

RES50

OPI

(
+

)

OPI

(

)

OPOU

PVCC2

DO1.

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

CTL1

OUT4

DO6.1

DO5.2

DO5.1

DO4.2

DO4.1

PGND1

PGND2

DO3.2

DO3.1

PGND3

DO2.2

DO2.1

REV1

CTL

REV2

SGND

MUTE1

MUTE2

MUTE3

MTUE4

PVCC1

DO6

.
2

KA3031

Application Circuits

Differential Mode Control

KSB772

REG OUT

Vreset

VCC

TRACKING

FOCUS

SPINDLE

SLED

TRAY

CHANGE

SLED MUTE
SPINDLE MUTE
TRACKING MUTE
FOCUS MUTE

TRAT

INPUT

CONTROL

TY CG

CHANGE

INPUT

[SERVO PRE AMP]

[CONTROLLER]

Where TY is tray motor.

CG is change motor

KA3031

REF &

ALL

MUTE

FOCUS TRACKING SPINDLE SLED

PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7 PWM8

.
1

G50

REG0

REF

SVCC

RES

I
N

(
+

)

I
N

(

)

OPOUT

CC2

DO1.

IN1.2

OUT1

IN2.1

IN2.2

OUT2

IN3.1

IN3.2

OUT3

IN4.1

IN4.2

CTL1

OUT4

DO6.1

DO5.2

DO5.1

DO4.2

DO4.1

PGND1

PGND2

DO3.2

DO3.1

PGND3

DO2.2

DO2.1

REV1

CTL

REV2

SGND

MUTE1

MUTE2

MUTE3

MTUE4

PVCC1

DO6

.
2

KA3031

12/1/00 0.0m 001

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