Datasheet MM1538XQ Datasheet (MITSMI)

MITSUMI

4ch Moter driver IC for Portable CD Player

4-ch Motor Driver for Portable CD Players

Monolithic IC MM1538

Outline

This driver IC contains a 4ch H bridge driver and DC-DC converter control circuit on one chip, and was
developed for use in portable CD players. QFP-44 is used for the package, making it ideal for smaller sets.

Features

(1) Built-in 4ch H bridge driver, and PWM control of load drive voltage is made possible by external

components.
(2) DC-DC converter control circuit on chip.
(3) With reset output inversion output pin.
(4) Empty detection level can be switched between rechargeable battery and dry battery.
(5) Constant current charging; current value can be varied using external resistor.
(6) Built-in power transistor for charging.
(7) Built-in independent thermal shutdown circuit.

Package

QFP-44

Applications

Portable CD radio cassette recorders

MITSUMI

4ch Moter driver IC for Portable CD Player

Block Diagram

33

34

22

21

20

19

18

17

16

15

14

13

12

35

36

37

38

39

40

41

42

43

44

1 2 3 4 5 6 7 8 9 10 11

32 31 30 29 28 27 26 25 24 23

AMUTE

EMP

HVcc

PSW

CLK

START

OFF

CHGVcc

SEL

PREGND

PWMFIL

IN1

MUTE2

IN2

MUTE34

IN4

IN3

Vref

VSYS2

OP+

OP

OUT

VSYS1

RCHG OUTIR OUT1F OUT2R OUT2F POWGND OUT3F OUT3R OUT4F OUT4R BRAKE1

BSEN BATT RESET DEAD SW EO EI SPRT CT N.C. OP

-

V

I

/

V

I

/

V

I

/

V

I

/

BRAKE1

BTL

BTL

BTL

BTL

POWER

OFF

STARTER

MAXIMUM

DETECTION

CLK

TSD

TRIANGLE WAVE

OVER-VOLTAGE

PRE

-

DRIVER POWER SUPPLY

TSD

POWER UNIT

POWER SUPPLY

CONTROL CIRCUIT

POWER SUPPLY

MUTE2

MUTE34

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin Assignment

AMUTE

RCHG OUT1R OUT1F OUT2R OUT2F OUT3F OUT3R OUT4F OUT4R BRAKE1

POWGND

BSEN BATT RESET DEAD SW EI SPRT CT N.C. OP

-

EO

1 2 3 4 5 7 8 9 10 116

33

34

35

36

37

38

39

40

41

42

43

44

22

21

20

19

18

17

16

15

14

13

12

32 31 30

MM1538XQ

29 27 26 25 24 2328

EMP

HV

CC

PSW

CLK

START

OFF

CHGV

CC

SEL

PREGND

PWMFIL

IN1

MUTE2

IN2

MUTE34

IN4

IN3

Vref

VSYS2

OP+

OPOUT

VSYS1

1 BSEN 23 BRAKE1
2 BATT 24 OUT4R
3 RESET 25 OUT4F
4 DEAD 26 OUT3R
5 SW 27 OUT3F
6 EO 28 POWGND
7 EI 29 OUT2F
8 SPRT 30 OUT2R
9 C

T 31 OUT1F

10 N.C. 32 OUT4R
11 OP

-

33 RCHG
12 VSYS1 34 AMUTE
13 OPOUT 35 EMP
14 OP+ 36 HV

CC

15 VSYS2 37 PSW
16 Vref 38 CLK
17 IN3 39 START
18 IN4 40 OFF
19 MUTE34 41 CHGV

CC

20 IN2 42 SEL
21 MUTE2 43 PREGND
22 IN1 44 PWMFIL

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin No. Pin Name

Input/Output

Function Internal Equivalent Circuit

1 BSEN

Battery Voltage Monitor

1

71kΩ

16.5kΩ

20kΩ

10.5kΩ

14.85kΩ

Pin Description

Input

Battery Power Supply InputInput Power Supply

3 RESET Output Reset Detect Output

4

49kΩ

13kΩ

30.8kΩ

4 DEAD Input DEAD Time Setting

5 SW Output Transistor Drive For Voltage

Multiplier

3

90kΩ

VSYS1

2 BATT

6

VSYS1

6 EO Output Error Amplifier Output

BATT

5

150Ω

6kΩ

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin No. Pin Name

Input/Output

Function Internal Equivalent Circuit

7 EI

Error Amplifier Input

35kΩ

21.6kΩ

7

VSYS1

Pin Description

Input

Short Circuit Protection

Setting

Output

9 CT Output Triangular

-

Wave Output

10 N.C.

11 OP

-

14 OP+

Input Op Amp Negative Input

Op Amp Positive Input

420kΩ

10kΩ

2kΩ

9

VSYS1

BATT

8 SPRT

220kΩ

8

VSYS1

12 VSYS1 Input Control Circuit Power Supply

Input

Control Circuit Power Supply

13

VSYS1

13 OPOUT Output Op Amp Output

14

11

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin No. Pin Name

Input/Output

Function Internal Equivalent Circuit

15 VSYS2

Driver Pre-step Power Supply

Pin Description

Input

Reference Voltage InputInput

17 IN3

18 IN4

20 IN2

22 IN1

Input ch3 Control Signal Input

ch4 Control Signal Input

ch2 Control Signal Input

ch1 Control Signal Input

68kΩ

68kΩ

19

21

23

19 MUTE34

21 MUTE2

23 BRAKE1

Input ch3 and 4 Mute

ch2 Mute

ch1 Brake

11kΩ

20PIN=7.5kΩ

17

18

20

22

16 Vref

16

24kΩ

50kΩ

200Ω

4

36

24

26

30

32

25

27

29

31

28

24 OUT4R

25 OUT4F

26 OUT3R

27 OUT3F

29 OUT2F

30 OUT2R

31 OUT1F

32 OUT1R

Output ch4 Negative Output

ch4 Positive Output

ch3 Negative Output

ch3 Positive Output

ch2 Positive Output

ch2 Negative Output

ch1 Positive Output

ch1 Negative Output

28 POWGND Power Block Power Supply

Ground

36 HVCC Input H-Bridge Power Supply Input

950Ω

33

33 RCHG Input Charge Current Setting

Pre

-

Drive Power Supply

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin No. Pin Name

Input/Output

Function Internal Equivalent Circuit

34 AMUTE

Reset Invert Output

34

95kΩ

BATT

Pin Description

Output

Empty Detect OutputOutput

37 PSW Output PWM Transistor Drive

38

2kΩ

50kΩ

100kΩ

VSYS1

38 CLK Input External Clock Synchronizing

Input

39 START Input Voltage Multiplier DC

-

DC

Converter Start

50Ω

37

BATT

35 EMP

35

40

180kΩ

27kΩ

VSYS1

40 OFF Input Voltage Multiplier DC-DC

Converter OFF

39

390kΩ

200kΩ

BATT

MITSUMI

4ch Moter driver IC for Portable CD Player

Pin No. Pin Name

Input/Output

Function Internal Equivalent Circuit

41 CHGV

CC Charging Circuit Power Supply

Input

Pin Description

Input

Empty Detect Level SwitchInput

Output

43 PREGND Pre Section Power Supply

Ground

2kΩ

2kΩ

VSYS1

44

44 PWMFIL Input PWM Phase Compensation

42 SEL

200kΩ

130kΩ

15kΩ

42

BATT

Charging Circuit Power Supply

Pre Section Power Supply Ground

*

The positive and negative outputs are the polarity with respect to the input

MITSUMI

4ch Moter driver IC for Portable CD Player

Absolute Maximam Ratings

(Ta=25°C)

Recommended Operating Conditions

Electrical Characteristics

(unless otherwise specified, Ta=25°C , BATT=2.4V, VSYS1=VSYS2=3.2V,Vref=1.6V,
CHGVcc=0V,fCLK=88.2kHz)

Item Symbol Min. Typ. Max. Unit

Control Circuit Power Supply Voltage

VSYS1 2.7 3.2 5.5 V

Pre-Driver Circuit Power Supply Voltage

VSYS2 2.7 3.2 5.5 V

H-Bridge Power Supply Voltage HV

CC PWM BATT V

Power Supply Voltage BATT 1.5 2.4 8.0 V

Charging circuit Power Supply Voltage

CHGVCC 3.0 4.5 8.0 V

Operating Temperature Ta –10 25 70 °C

Item Symbol Measurement Conditions Min. Typ. Max. Unit

<Common Section>

BATT Stand-by Current I

ST

BATT=9.0V, VSYS1=VSYS2=Vref=0V

03µA

BATT Supply Current (No load)

IBAT HVCC=0.45V, MUTE34=3.2V 2.5 4.0 mA

VSYS1 Supply Current (No load)

I

SYS1 HVCC

=

0.45V, MUTE34=3.2V, EI=0V 4.7 6.4 mA

VSYS2 Supply Current (No load)

ISYS2 HVCC=0.45V, MUTE34=3.2V 4.1 5.5 mA

CHGVcc Supply Current (No load)

ICGVCC CHGVCC=4.5V, ROUT=OPEN 0.65 2.00 mA

<H

-

Bridge Driver Part>

Voltage Gain ch1,ch3.ch4 G

VC134 12 14 16 dB

Voltage Gain ch2 G

VC2 21.5 23.5 24.5 dB

Gain Error By Polarity G

VC

-

20 2dB

Input pin resistance ch1,ch3,ch4

RIN134 IN=1.7V and 1.8V 9 11 13 kΩ

Input pin resistance ch2 R

IN2 IN

=

1.7V and 1.8V 6 7.5 9 kΩ

Maximum Output Voltage V

OUT

RL=8Ω, HVcc=BATT=4.0V, IN=0-3.2V

1.9 2.1 V

Saturation Voltage (Lower) V

satL Io

=-300mA, IN=0 and 3.2V 240 400 mV

Saturation Voltage (Upper) V

satU Io

=-300mA, IN=0 and 3.2V 240 400 mV

Input Offset Voltage V

OI

-

80 8mV

Output Offset Voltage ch1,ch3,ch4

VOO134 Vref=IN=1.6V

-

50 0 50 mV

Output Offset Voltage ch2 V

OO2 Vref

=IN=

1.6V

-

130 0 130 mV

Dead Zone V

DB

-

10 0 10 mV

BRAKE1ON Threshold Voltage

VBRON IN1=1.8V 2.0 V

BRAKE1OFF Threshold Voltage

VBROFF IN1=1.8V 0.8 V

MUTE2 ON Threshold Voltage

VM2ON IN2=1.8V 2.0 V

*1 Vcc shows input voltage of VSYS1,VSYS2,HVcc,BATT,and CHGVcc.
*2 Reduced by 5mW for each increase in Ta of 1°C over 25°C.

Item Symbol Rating Unit

Supply Voltage V

CC *1 13.5 V

Driver Output Current I

O 500 mA

Power Dissipation Pd 625 *2 mW

Operating Temperature T

OPR –30 ~ +85 °C

Storage Temperature T

STG –55 ~ +150 °C

MITSUMI

4ch Moter driver IC for Portable CD Player

Electrical Characteristics

(unless otherwise specified, Ta=25°C , BATT=2.4V, VSYS1=VSYS2=3.2V,Vref=1.6V,
CHGVcc=0V,fCLK=88.2kHz)

Item Symbol Measurement Conditions Min. Typ. Max. Unit

<H

-

Bridge Driver Part>

MUTE2 OFF Threshold Voltage

VM2OFF IN2=1.8V 0.8 V

MUTE34 ON Threshold Voltage

VM34ON IN3=IN4=1.8V 0.8 V

MUTE34 OFF Threshold Voltage

VM34OFF IN3=IN4=1.8V 2.0 V

Vref ON Threshold Voltage V

refON IN1

=

IN2=IN3=IN4=1.8V 1.2 V

Vref OFF Threshold Voltage V

refOFF IN1

=

IN2=IN3=IN4=1.8V 0.8 V

BRAKE1 Brake Current I

BRAKE1

Current difference between BRAKE pin "H" time and "L" time.

4 7 10 mA

<PWM Power Supply Driving>

PSW Sink Current I

PSW IN1

=

2.1V 10 13 17 mA

HVcc Level Shift Voltage V

SHIF IN1

=

1.8V, HVCC-OUT1F 0.35 0.45 0.55 V

HVcc Leak Current I

HLK

HVCC=9.0V, VSYS1=VSYS2=BATT=0V

05µA

PWM Amp Transfer Gain G

PWM IN1

=

1.8V, HVCC=1.2 ~ 1.4V 1/60 1/50 1/40 1/kΩ

<DC

-

DC Converter>

<Error Amp>

VSYS1 Threshold Voltage V

S1TH 3.05 3.20 3.35 V

EO Pin Output Voltage "H" V

EOH EI

=

0.7V, Io=-

100µA 1.4 1.6 V

EO Pin Output Voltage "L" V

EOL EI

=

1.3V, Io=100µA 0.3 V

<Short Circuit Protection>

SPRT Pin Voltage V

SPR EI

=

1.3V 0 0.1 V

EO=H SPRT Pin Current1 I

SPR1 EI

=

0.7V 6 10 16 µA

OFF=L SPRT Pin Current2 I

SPR2 EI

=

1.3V, OFF=0V 12 20 32 µA

SPRT Pin Current3 Over-Voltage

ISPR3 EI=1.3V, BATT=9.5V 12 20 32 µA

SPRT Pin Impedance R

SPR 175 220 265 kΩ

SPRT Pin Threshold Voltage V

SPTH EI

=

0.7V, CT=0V 1.10 1.20 1.30 V

Over-Voltage Protection Detect

VHVPR BSEN Pin Voltage 8.0 8.4 9.0 V

<Transistor Driving>

SW Pin Output Voltage1 "H" V

SW1H

BATT=CT=1.5V, VSYS1=VSYS2=0V,

0.78 0.98 1.13 V

Io=-2mA

Starting Time

SW Pin Output Voltage2 "H" VSW2H

CT=0V, Io=-10mA, EI=0.7V, SPRT=0V

1.00 1.50 V

SW Pin Output Voltage2 "L" V

SW2L CT

=

2.0V, Io=10mA 0.30 0.45 V

SW Pin Oscillating Frequency1

fSW1

CT=470pF, VSYS1=VSYS2=0V Starting Time

65 80 95 kHz

SW Pin Oscillating Frequency2

f

SW2 CT

=

470pF, CLK=0V 60 70 82 kHz

SW Pin Oscillating Frequency3

fSW3 CT=470pF 88.2 kHz

SW Pin Minimum Pulse Width

TSWmin CT=470pF, EO=0.5V 0.7V Sweep 0.01 0.60 µs

Pulse Duty Start D

SW1 CT

=

470pF, VSYS1=VSYS2=0V 40 50 60 %

Max.Pulse Duty At Self-Running

DSW2 CT=470pF, EI=0.7V, CLK=0V 70 80 90 %

Max. Pulse Duty At CLK Synchronization

DSW3 CT=470pF, EI=0.7V 65 75 85 %

<Interface>

OFF Pin Threshold Voltage

VOFTH EI=1.3V

VSYS1-2.0

V

OFF Pin Bias Current I

OFF OFF

=

0V 75 95 115 µA

START Pin ON Threshold Voltage

V

STATH1 VSYS1

=

VSYS2=0V, CT=2.0V

BATT-1.0

V

START Pin OFF Threshold Voltage

VSTATH2 VSYS1=VSYS2=0V, CT=2.0V

BATT-0.3

V

MITSUMI

4ch Moter driver IC for Portable CD Player

Electrical Characteristics

(unless otherwise specified, Ta=25°C , BATT=2.4V, VSYS1=VSYS2=3.2V,Vref=1.6V,
CHGVcc=0V,fCLK=88.2kHz)

Item Symbol Measurement Conditions Min. Typ. Max. Unit

<Interface>

START Pin Bias Current I

START START=0V

10 20 30

µA

13 16 19

CLK Pin Threshold Voltage"H"

VCLKTHH 2.0 V

CLK Pin Threshold Voltage"L"

VCLKTHL 0.8 V

CLK Pin Bias Current I

CLK CLK

=

3.2V 10 µA

<Dead Time>

DEAD Pin Impedance R

DEAD 52 65 78 kΩ

DEAD Pin Output Voltage V

DEAD 0.78 0.88 0.98 V

<Starter Circuit>

Starter Switching Voltage V

STNM VSYS1=VSYS2=0V 3.2V, START=0V 2.3 2.5 2.7 V

Starter Switching Hysteresis Width

VSNHS START=0V 130 200 300 mV

Discharge Release V

DIS 1.63 1.83 2.03 V

<Empty Detection>

EMP Detection Voltage 1 V

EMPT1 VSEL

=

0V 2.1 2.2 2.3 V

EMP Detection Voltage 2 V

EMPT2 ISEL

=-2µA 1.7 1.8 1.9 V

EMP Detection Hysteresis Voltage 1

VEMHS1 VSEL=0V 25 50 100 mV

EMP Detection Hysteresis Voltage 2

VEMHS2 ISEL=-

2µA 25 50 100 mV

EMP Pin Output Voltage V

EMP Io

=

1mA, BSEN=1V 0.5 V

EMP Pin Output Leak Current

IEMPL BSEN=2.4V 1.0 µA

BSEN Pin Input Resistance R

BSEN VSEL

=

0V 17 23 27 kΩ

BSEN Pin Leak Current I

BSENL VSYS1

=

VSYS2=0V, BSEN=4.5V 1.0 µA

SEL Pin Detection Voltage V

SELTH VSELTH

=

BATT-SEL, BSEN=2.0V 1.5 V

SEL Pin Detection Current I

SELT

-

2µA

<Reset Circuit>

VSYS1 RESET Threshold Voltage Ratio

HSRT

Comparison with error amplifier threshold voltage

85 90 95 %

RESET Detection Hysteresis Width

VRSTHS 25 50 100 mV

RESET Pin Output Voltage V

RST Io

=

1mA, VSYS1=VSYS2=2.8V 0.5 V

RESET Pin PULL UP Resistance

RRST 72 90 108 kΩ

AMUTE Pin Output Voltage 1

VAMT1 Io=-

1mA, VSYS1=VSYS2=2.8V

BATT-0.4

BATT

V

AMUTE Pin Output Voltage 2

VAMT2

Io=-1mA, START=0V, VSYS1=VSYS2=0V

BATT-0.4

BATT

V

AMUTE Pin PULL DOWN Resistance

RAMT 77 95 113 kΩ

<Op Amp>

Input Bias Current I

BIAS OP+

=

1.6V 300 nA

Input Offset Voltage V

OIOP

-

5.5 0 5.5 mV

High Level Output Voltage V

OHOP RL

=

OPEN 2.8 V

Low level Output Voltage V

OLOP RL

=

OPEN 0.2 V

Output Drive Current (Source)

ISOU 50Ω GND

-

6.5-3.0 mA

Output Drive Current (Sink)

ISIN 50Ω VSYS1 0.4 0.7 mA

Open Loop Voltage Gain GVO V

IN

=-75dBV, f=1kHz 70 dB

Slew Rate SR 0.5 V/µs

<Battery Charging Circuit>

RCHG Pin Bias Voltage V

RCHG CHGVCC

=

4.5V, RCHG=1.8kΩ 0.71 0.81 0.91 V

MITSUMI

4ch Moter driver IC for Portable CD Player

Electrical Characteristics

(unless otherwise specified, Ta=25°C , BATT=2.4V, VSYS1=VSYS2=3.2V,Vref=1.6V,
CHGVcc=0V,fCLK=88.2kHz)

Item Symbol Measurement Conditions Min. Typ. Max. Unit

<Battery Charging Circuit>

RCHG Pin Output Resistance

RRCHG CHGVCC=4.5V, RCHG=0.5 and 0.6V 0.75 0.95 1.20 kΩ

SEL Pin Leak Current 1 I

SELLK1

CHGVCC=4.5V, RCHG=OPEN, BATT=4.5V

1.0 µA

SEL Pin Leak Current 2 I

SELLK2

CHGVCC=0.6V, RCHG=1.8kΩ, BATT=4.5V

1.0 µA

SEL Pin Saturation Voltage V

SELCG

CHGVCC=4.5V, Io=300mA, RCHG=0Ω

0.45 1.00 V

Measuring Circuit

AMUTE

EMP

HVcc

PSW

CLK

START

OFF

CHGVCC

SEL

PREGND

PWMFIL

RCHG

OUT1R

OUT1F

OUT2R

OUT2F

POWGND

OUT3F

OUT3R

OUT4F

OUT4R

BRAKE1

33 32 31 30 29 28 27 26 25 24 23

34

35

36

37

38

39

40

41

42

43

44

1 2 3 4 5 6 7 8 9 10 11

22

21

20

19

18

17

16

15

14

13

12

IN1

MUTE2

IN2

MUTE34

IN4

IN3

Vref

VSYS2

OP+

OP

OUT

VSYS1

MM1538XQ

BSEN

BATT

RESET

DEADSWEO

EI

SPRT

Ct

N.C

OP

-

A

V

V

AA

V

A

V

A

V

V

V

A

A

A

V

V

A

A

V

V

V

V

A

a

a

a

a

b

b

b

b

SW16

SW15

SW14

SW13

10µ

1k

SW12

V

SW11

a

a

d

c

b

b

50

V

A

V

V

SW19

1.8k

SW20

a

b

a

b

c
a

b
a

b

b

b

b

a

a

a

a

a

V

V

V

a

ba

b

B

R F

SW18 SW17

SW21

47

51k

SW22

SW23

a
b

47µ

33µ

SW24

SW25

SW26

SW27

SW28

100k

2200p

10p

20k

100k

470µ

SW10

SW9

a

aaa

a

a

a

a

aa

bb

b

b

b

b

b

SW1

SW2

SW3ASW4

VVV

SW5 SW6

10k

10k

SW7

SW8

470p

1M

V

frequency

100µ

A A A

A

A

A A A

A

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

Item

SW No.

1 4 5 6 7 8 22 24 25 26

BATT Stand-by Current

----------

BATT Supply Current (No load)

------

a

-

a

-

VSYS1 Supply Current (No load)

---

a

--

a

-

a

-

VSYS2 Supply Current (No load)

------

a

-

a

-

CHGVcc Supply Current (Noload)

----------

VSYS1 Threshold Voltage

--

a

-------

EO Pin Output Voltage "H"

--

aa

------

EO Pin Output Voltage "L"

--

aa

------

SPRT Pin Voltage

---

aa

-----

SPRT Pin Current1 EO="H"

---

ab

-----

SPRT Pin Current2 OFF="L"

---

ab

----

a

SPRT Pin Current3 Over-Voltage a

--

ab

-----

SPRT Pin Impedance

----

b

-----

SPRT Pin Threshold Voltage

---

aaa

----

Over-Voltage Protection Detect a

---

a

-----

SW Pin Output Voltage1 "H"

-

a

---

a

--

a

-

SW Pin Output Voltage2 "H"

-

a

-

aba

----

SW Pin Output Voltage2 "L"

-

a

---

a

----

SW Pin Oscillating Frequency 1

-

b

---

b

--

a

-

SW Pin Oscillating Frequency 2

-

b

---

b

-

b

--

SW Pin Oscillating Frequency 3

-

b

---

b

-

a

--

SW Pin Minimum Pulse Width

-

bb

--

b

----

Pulse Duty Start

-

b

---

b

-

ba

-

Max. Pulse Duty At Self-Running

-

b

---

b

-

b

--

Max. Pulse Duty At CLK Synchronization-b

-

a

-

b

-

a

--

-

: Turn off switch

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

Item

SW No.

2 3 4 6 7 8 20 24 25 26

DEAD Pin Impedance

-

b

--------

DEAD Pin Output Voltage

-

a

--------

OFF Pin Threshold Voltage

---

aa

----

a

OFF Pin Bias Current

---------

a

START Pin ON Threshold Voltage

--

a

--

a

--

a

-

START Pin OFF Threshold Voltage

--

a

--

a

--

a

-

START Pin Bias Current

--------

a

-

CLK Pin Threshold Voltage"H"

--

a

--

b

-

b

--

CLK Pin Threshold Voltage"L"

--

a

--

b

-

b

--

CLK Pin Bias Current

-------

a

--

Starter Switching Voltage

--

a

-----

a

-

Starter Switching Hysteresis Width

--

a

-----

a

-

Discharge Release Voltage

----

a

-----

VSYS1 Pin RESET Threshold

b

---------

Voltage Ratio

RESET Detection Hysteresis Width

b

---------

RESET Pin Output voltage b

---------

RESET Pin PULL UP Resistance a

---------

AMUTE Pin Output Voltage 1

------

b

---

AMUTE Pin Output Voltage 2

------

b

-

a

-

AMUTE Pin PULL DOWN Resistance

------

a

---

-

: Turn off switch

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

Item

SW No.

1 9 10 11 12 21 27

EMP Detection Voltage 1 a

----

aa

EMP Detection Voltage 2 a

----

ab

EMP Detection Hysteresis Voltage 1 aa

---

aa

EMP Detection Hysteresis Voltage 2 a

----

ab

EMP Pin Output Voltage a

----

b

-

EMP Pin Output Leak Current a

----

c

-

BSEN Pin Input Resistance a

-----

a

BSEN Pin Leak Current a

------

SEL Pin Detection Voltage a

----

aa

SEL Pin Detection Current a

----

ab

Input Bias Current

--

a

----

Input Offset Voltage

--

d

----

"H" Level Output Voltage

-

bc

----

"L" Level Output Voltage

-

ac

----

Output Drive Current (Source)

-

db

---

Output Drive Current (Sink)

--

da

---

Open Loop Voltage Gain

--

b

-

a

--

Slew Rate

--

d

-

a

--

-

: Turn off switch

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

Item

SW No.

13 14 15 16 17 18 22

ch1R

---

bbba

Voltage Gain

ch2R

--

b

-

bba

ch3R b

---

bba

ch4R

-

b

--

bba

ch1

---

bbba

Gain Error By Polarity

ch2

--

b

-

bba

ch3 b

---

bba

ch4

-

b

--

bba

ch1

---

bbba

Input pin resistance

ch2

--

b

-

bba

ch3 b

---

bba

ch4

-

b

--

bba

ch1R

---

bbba

Maximum Output Voltage

ch2R

--

b

-

bba

ch3R b

---

bba

ch4R

-

b

--

bba

ch1F

--

ba

-

a

ch1R

--

b

-

aa

ch2F

-

b

-

a

-

a

Saturation Voltage (Lower)

ch2R

-

b

--

aa

ch3F b

--

a

-

a

ch3R b

---

aa

ch4F

-

b

--

a

-

a

ch4R

-

b

---

aa

ch1F

---

ba

-

a

ch1R

---

b

-

aa

ch2F

--

b

-

a

-

a

Saturation Voltage (Upper)

ch2R

--

b

--

aa

ch3F b

---

a

-

a

ch3R b

----

aa

ch4F

-

b

--

a

-

a

ch4R

-

b

---

aa

ch1

---

a

--

a

Input Offset Voltage

ch2

--

a

---

a

ch3 a

-----

a

ch4

-

a

----

a

ch1

---

bbba

Output Offset Voltage

ch2

--

b

-

bba

ch3 b

---

bba

ch4

-

b

--

bba

ch1

---

bbba

Dead Zone

ch2

--

b

-

bba

ch3 b

---

bba

ch4

-

b

--

bba

-

: Turn off switch

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

Item

SW No.

19 27

CHGSET Pin Bias Voltage a

-

CHGSET Pin Output Resistance b

-

SEL Pin Leak Current 1

-

a

SEL Pin Leak Current 2 aa

SEL Pin Saturation Voltage bb

-

: Turn off switch

Item

SW No.

13 14 15 16 17 18 22 23 28

BRAKE1 ON Voltage ch1

---

bbba

--

BRAKE1 OFF Voltage ch1

---

bbba

--

MUTE2 ON Voltage ch2

--

b

-

bba

--

MUTE2 OFF Voltage ch2

--

b

-

bba

--

MUTE34 ON Voltage

ch3 b

---

bba

--

ch4

-

b

--

bba

--

MUTE34 OFF Voltage

ch3 b

---

bba

--

ch4

-

b

--

bba

--

ch1

---

bbba

--

Vref ON Voltage

ch2

--

b

-

bba

--

ch3 b

---

bba

--

ch4

-

b

--

bba

--

ch1

---

bbba

--

Vref OFF Voltage

ch2

--

b

-

bba

--

ch3 b

---

bba

--

ch4

-

b

--

bba

--

BREAK1 Brake Current ch1

---

bbba

--

PWM Sink Current

---

b

--

aba

HV

CC Level Shift Voltage

---

bbbbab

HV

CC Leak Current

----

bba

--

PWM Amp Transfer Gain

---

bbba

--

MITSUMI

4ch Moter driver IC for Portable CD Player

Switching Position Table

VO4 VO3

VIN1

VIN3

VO2 VO1

Dead Zone

Output Offset Voltage

V

IN4

V

IN2

XC' XC

Output voltage:VO(mV)

Input voltage:VIN(mV)

Voltage Gain

G

VC (+)=20 log VO1

-

VO2

V

IN1

-

VIN2

G

VC (

-

)=20 log VO3-VO4

V

IN3

-

VIN4

Gain Error By Polarity

G

VC=GVC (+)

-

GVC (-)

Dead Zone

XC

-

XC'= VIN2·VO1-VIN1·VO2 -VIN3·VO4-VIN4·VO3

VO1

-

VO2 VO3-VO4

MITSUMI

4ch Moter driver IC for Portable CD Player

Application Circuit

MM

33

34

22

21

20

19

18

17

16

15

14

13

12

35

36

37

38

39

40

41

42

43

44

1 2

3

4 5 6 7 8 9 10 11

32 31 30 29 28 27

26

25 24 23

AMUTE

EMP

HVcc

PSW

CLK

START

OFF

CHGVcc

SEL

PREGND

PWMFIL

IN1

MUTE2

IN2

MUTE34

IN4

IN3

Vref

VSYS2

OP+

OPOUT

VSYS1

BRAKE1

POWER

OFF

STARTER

MAXIMUM

DETECTION

CLK

0.1µ

0.1µ

47µ

47

33µ

TSD

TRIANGLE WAVE

OVER-VOLTAGE

PRE-DRIVER POWER SUPPLY

TSD

CONTROL CIRCUIT

POWER SUPPLY

RCHG

OUTIR

OUT1F

OUT2R

OUT2F

POWGND

OUT3F

OUT3R

OUT4F

OUT4R

BRAKE1

BSEN

BATT

RESET

DEAD

SW

EO

EI

SPRT

C

T

N.C.

OP

-

TRAVERSE

SPINDLE

FOCUS

TRACKING

BTL BTL BTL BTL

MUTE2

MUTE34

FILTER

1.8k

0.1µ 470p0.022µ8.2k

100µ

0.1µ

V

OUT

47µ

V

IN

10p

2200p

100k

100k

DC–DC

Converter

application

/

/

/

/

· We shall not be liable for any trouble or damege caused by using this circuit.

· In the event a problem which may affect industrial property or any other rights of us or a third party is

encountered during the use of information described in these circuit, Mitsumi Electric Co., Ltd. shall not be
liable for any such problem, nor grant a license therefor.

MITSUMI

4ch Moter driver IC for Portable CD Player

Circuit operation

1 H-bridge driver block

(1) Gain setting

· The driver input resistance (ch 1,3 and 4) are 11kΩ typ. ,ch2 is 7.5kΩ typ. . Set the gain according to the
following formula.

· The driver output stage power supply is HVcc(36PIN), and the bridge circuit power supply is VSYS2
(15PIN). Connect a bypass capacitor between these two power supplies(approximately 0.1µF).

(2) Mute function

· Of the four drivers,ch1 has a brake function,and the other channels have a mute function.

· When BRAKE1(23PIN)is set to high level, both ch1 outputs go low level, and the circuit enters brake mode.

· When MUTE2(21PIN)is set to high level, the ch2 output is muted.

· When MUTE34(19PIN)is set to high level, the ch3 and 4 outputs are muted.

(3) Vref drop mute

· When the voltage applied to Vref(16PIN)is 1.0V or less typ. , the driver outputs are set to high impedance.

(4) Thermal shutdown

· When the chip temperature reaches 150°C typ. the output current is cut. The chip starts operating again at
about 120°C typ. .

2 PWM power supply drive block

· This detects the maximun output level from among the four channels, and supplies the load drive power
supply(36PIN)for the PWM. The external components are a PNP transistor, coil, Schottky diode,and
capacitor.

100kΩ

47kΩ

PSW

BATT

44 37 36

HVCC

SBD

47µF

33µH

PWMFIL

0.1µF

2200pF

10pF

ch1
ch2 GV=20log

55k

(db)

ch3

11k

+R

ch2 GV=20log

110k

(db)

7.5k

+R

R:Externally-connected input

MITSUMI

4ch Moter driver IC for Portable CD Player

3 DC-DC converter block

(1) Output voltage

· 3.2V typ. voltage multiplier circuit can be constructed using external components. This voltage can be
varied with the addition of an external resistor. The setting method is as follows.

R1 · R3 + R2 · R4

VSYS1=1.2

R1+R3 R2+R4

(V)

R2 · R4
R2+R4

(2) Short protect function

· When the error amplifier output(6PIN)has switched to the high-level state,SPRT(8PIN)is charged, and when
the voltage reaches 1.2V typ. , the SW(5PIN)switching stops.The time until switching stops is set by the
capacitor connected to SPRT(8PIN)according to the following formula.

t=CSPRT

V

TH

(sec) (VTH=1.2V, ISPRT=10µA)

ISPRT

(3) Soft start function

· The soft start function operates when a capacitor is connected between DEAD(4PIN)and GND.
Also, the maximum duty can be varied by connecting a resistor to 4PIN.

t=CDEAD R (sec) (R=65kΩ)

(4) Power off function

· When low-level is applied to OFF(40PIN), SPRT(8PIN)is charged, and when the voltage reaches 1.2V typ. ,
the SW(5PIN)switching stops. The time until switching stops is set by the capacitor connected to
SPRT(8PIN)according to the following formula.

t=CSPRT

V

TH

(sec) (VTH=1.2V, IOFF=20µA)

I

OFF

R3

R4

12

7

EI

R1

R2

1.2V

R1=external resistor

R2=external resistor

R3=35kΩ

R4=21kΩ

VSYS1

MITSUMI

4ch Moter driver IC for Portable CD Player

(5) Over voltage protection circuit

· When the voltage applied to BSEN(1PIN)reaches 8.4V typ. , SPRT(8PIN)is charged, and when the voltage
reaches 1.2V typ. , theSW(5PIN)switching stops. The time until switching stops is set by the capacitor
connected to SPRT(8PIN)according to the following formula.

t=CSPRT

V

TH

(sec) (VTH=1.2V, IHV=20µA)

IHV

4 Empty detector block

(1) Output voltage

· When the voltage applied to the BSEN(1PIN)falls below the detector voltage, EMP(35PIN)goes from high
level to low level(open-collector output). The detector voltage has 50mV typ. of hysteresis to prevent
output chattering. Use SEL(42PIN)to switch the detection voltage as shown below.

5 Reset circuit block

· At about 90% typ. of the DC-DC converter output voltage, RESET(3PIN)goes from low level to high level,
and AMUTE(34PIN)goes from high level to low level. The reset voltage has 50mV typ. of hysteresis to
prevent output chattering.

6 Charging circuit block

· The power supply for the charging circuit block is CHGV

CC(41PIN), and is independent from the other

circuits.The resistance between RCHG(33PIN)and GND sets the charging current. This current is drawn
from SEL(42PIN).

· A thermal shutdown circuit is provided,and when the chip temperature reaches 150°C typ. the charging
current is cut. The chip starts operating again at about 120°C typ. .

SEL Detect Voltage Return Voltage

L 2.20V typ. 2.25V typ.

High-Z 1.80V typ. 1.85V typ.

MITSUMI

4ch Moter driver IC for Portable CD Player

Characteristics

Input voltage:VIN(V)

3

2

1

0

-1

-2

-3

-0.8 -0.6 -0.4 -0.2 0 0.2

20Ω

RL=∞

•

Ta=normal temperature

•

BATT=HVCC=4V

•

VSYS1=VSYS2=3.2V

•

Vref=1.6V

8Ω4Ω

4Ω

8Ω

20Ω

∞

0.80.4 0.6

Output voltage:VO(V)

Input voltage:VIN(V)

3

2

1

0

-1

-2

-3

-0.8 -0.6 -0.4 -0.2 0 0.2

20Ω

RL=∞

•

Ta=normal temperature

•

BATT=HVCC=4V

•

VSYS1=VSYS2=3.2V

•

Vref=1.6V

8Ω4Ω

4Ω8Ω20Ω

∞

0.80.4 0.6

Output voltage:VO(V)

Out voltage:VO(mV)

0.006

0.004

0.002

0

-0.002

-0.004

-0.006

-30 -20 -10 0 10

20Ω

•

Ta=normal temperature

•

BATT=HVCC=4V

•

VSYS1=VSYS2=3.2V

•

Vref=1.6V

8Ω

4Ω

4Ω

8Ω

20Ω

3020

Input voltage:VIN(mV)

Input Load Fluctuation

Input Load Fluctuation (ch2)

Daed Zone

MITSUMI

4ch Moter driver IC for Portable CD Player

Characteristics

Control Circuit Power Supply voltage:VSYS1(V)

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

0 0.5 1.0 1.5 2.0 2.5

Ta=

normal temperature

BATT=2.4V

EO PIN

DAED PIN

4.03.0 3.5

Dead Output voltageE:VDAED(V)

Eo Output voltage:VEO(V)

Control Circuit Power Supply voltage:VSYS1(V)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

0 0.5 1.0 1.5 2.0 2.5

Ta=

normal temperature

BATT=2.4V

4.03.0 3.5

Reset Output voltage:VRST(V)

Error Amp Output Voltage

Resete Pin Voltage