MITSMI MM1538XQ Datasheet

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

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

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

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

MITSMI MM1538XQ Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual