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MM1538XQ

4-ch Motor Driver for Portable CD Players

Mitsumi 

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

<Battery Charging Circuit>

RCHG Pin Output Resistance

SEL Pin Leak Current 1

SEL Pin Leak Current 2

SEL Pin Saturation Voltage

Symbol

RRCHG

ISELLK1

ISELLK2

VSELCG

Measurement Conditions

Min. Typ. Max. Unit

CHGVCC=4.5V, RCHG=0.5 and 0.6V

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

CHGVCC=0.6V, RCHG=1.8kΩ, BATT=4.5V

CHGVCC=4.5V, Io=300mA, RCHG=0Ω

0.75 0.95 1.20 kΩ

1.0 µA

1.0 µA

0.45 1.00 V

Measuring Circuit

a SW20

b

1.8k

a

b SW19

V

B

ba ab

SW18

SW17

V

V

51k

47µ

33µ

47

100µ

a

SW21

b

c

a SW22

b

a SW23

b

34 AMUTE

35 EMP

33 32 31 30 29 28 27 26 25 24 23

IN1 22

MUTE2 21

36 HVcc

IN2 20

a SW24

b

a SW25

a SW26

a

b SW27

37 PSW

38 CLK

39 START

40 OFF

41 CHGVCC

42 SEL

43 PREGND

MM1538XQ

MUTE34 19

IN4 18

IN3 17

Vref 16

VSYS2 15

OP+ 14

OPOUT 13

44 PWMFIL

V

SW28

ab

VSYS1 12

A

10p

100k

2200p

12

A

SW1 SW2

a ab

AA

V

3 4 5 6 7 8 9 10 11 SW10 d

SW5

SW6

c 20k

a ba

10k

ab

V

SWa3 b SW4a b

SW9

SW8

b aV

a

SW7

b

a

b 470p

1M

100k

470µ

A

V

V 10k

VA

V

RF

a

SW16

b

a

SW15

b

a

SW14

b

a

SW13

b

1k

V

a

SW12 10µ

a SW11

b

50

V

V

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