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PDF MM1646XH Data sheet ( Hoja de datos )
| Número de pieza | MM1646XH | |
| Descripción | 5ch Motor Driver | |
| Fabricantes | Mitsumi Electric | |
| Logotipo |  |
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MITSUMI
5ch Motor Driver
Monolithic IC MM1646XH
5ch Motor Driver MM1646XH
Outline
This IC is a motor driver IC for DVD players with 5ch built in (for spindle, sled, focus, tracking, loading).
Features
1. 5ch motor driver in one package.
2. Small package ensures heat loss of 2.2W.
3. Built-in short brake (spindle).
4. Built-in thermal shutdown function.
Package
HSOP-28D
Applications
1. for DVD players
2. for DVD minicomponent
Pin Assignment
28 27 26 25 24 23 22
21 20 19 18 17 16 15
1234567
8 9 10 11 12 13 14
HSOP-28D
(TOP VIEW)
1 PS 15 OUT4+
2
VBIAS
16 OUT4-
3
VIN1
17 OUT3+
4
VIN2+
18 OUT3-
5
VIN2-
19 OUTL+
6
VO2
20 OUTL-
7
PreVCC1
21 PowerGND2
8
PowerVCC1
22
PreVCC2
9
PowerVCC2
23
VIN3
10 PowerGND1 24
VIN4
11 OUT2- 25 PreGND
12 OUT2+ 26 VINLO-
13 OUT1- 27 VINLO+
14 OUT1+ 28
SB
http://www.Datasheet4U.com
1 page  
MITSUMI
5ch Motor Driver MM1646XH
Pin no.
17
18
Pin name
OUT3+
OUT3-
Function
Non inverted output of
spindle
Inverted output of spindle
Internal equivalent circuit diagram
Pre VCC1
6.5k 6.5k
17 18
Pre GND1
Power GND1
19
OUTL+
Non inverted output
of loading
20
OUTL-
Inverted output
of loading
Pre VCC2
19 20
26
VINLO-
Non inverted
input of loading
27
VINLO+
Inverted
input of loading
Pre GND2
Power GND1
26 27
7.2k
7.8k
28 SB Short brake input
28
7.2k
14k
5 Page 
MITSUMI
5ch Motor Driver MM1646XH
Movement explanation
1. Four type mute circuit that is off state built-in.
Item
Power-save mute function
(PIN 1)
Bias mute function (PIN 2)
Supply voltage mute function (PIN7)
Thermal shutdown circuit
Conditions
OPEN or Below 0.5V typ.
Current of PS is 110µA. when 5.0V typ.
Below 0.9V typ.
Over 1.2V typ.
Below 3.5V typ.
Over 3.7V typ.
Chip temperature rises to 175°C typ.
Chip temperature falls below 150°C typ.
Function
Circuit is muted from 1ch to 4ch.
Normal operating.
Output current is muted.
Normal operating.
Output current is muted.
Normal operating.
Output current is muted.
Normal operating.
2 Short-brake Function (spindle motor: ch3)
Short-brake function (28 PIN)
Open or below 0.5V typ.
Normal operating.
*Current of SB is 280µA, when 5.0V. spindle motor is stopped. Refer to fig.1
3. Input / Output truth table
a. Power Save part
Driver output
PS
ch1~4 Loading
L OFF ON
H ON ON
b. Thermal shutdown
TSD
ON
OFF
Driver output
ch1~4 Loading
OFF ON
ON ON
c. Loading part
VINLO+
HLHL
LHLH
HH
LL
VINLO-
OUTL+ OUTL -
L
OPEN
L
OPEN
Circuit behavior of short-brake
Power VCC2
OFF OFF
OUT3+
OUT3-
ON ON
Mode
Forward Mode
Reverse Mode
Brake Mode
Standby Mode
Motor
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MM1646XH.PDF ] | |
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