Mitsubishi M56781FP Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
)
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M56781FP
2-CHANNEL ACTUATOR MOTOR DRIVER
DESCRIPTION
The M56781FP is a semiconductor IC developed as the motor
driver used DVD, DVD-ROM, CD-ROM and CD Player.
This device include 2 channel BTL drivers and can drive 2
actuators with one IC at the same time.
Also, the mute circuit, thermal protection circuit and VREF voltage
monitor circuit functions are included.
FEATURES
●Low output saturation voltage (typ. 1.35V at 0.5A).
●Wide operating supply voltage range (4.5 – 15V).
●High current drive capability (maximum 0.9A).
●Low crossover distortion.
●High frequency capability.
APPLICATION
DVD, DVD-ROM, CD-ROM, CD-PLAYER
PIN CONFIGURATION(TOP VIEW
GND
VM2+
MUTE2B
MUTE2A
MUTE1
CC2
V
CC1
V
IN-
IN+
OUT
OP
VM1+
GND
1
2
3
4
5
7
11
12
Outline 24P2Q-A
24
GND
23
VM2-
22
CTL2
21
CTL2+
M56781FP
20
CTL2-
196
V
18
TSDS
178
CTL1-
169
CTL1+
1510
CTL1
14
VM1-
13
GND
OUT
REF
OUT
BLOCK DIAGRAM
IN+ IN-OPOUT
8910
+-
A3
GND
1, 12, 13, 24
VCC2
CTL1+
16
+
-
1.4V
+-
A1
A2
+
-
CTL1OUT
1517
VM1+ VM1-CTL1-
11
25k 25k
PA
+-
×5
5k
5k
25k
PA
5k
5k
×5
+-
25k
CH1
CH2
25k
5k
25k
MUTE1
514
VCC1
25k
PA
+-
×5
5k
5k
PA
5k
×5
+-
25k
VCC1
2
Vrefm
Vrefm
VCC2
2
VCC2
H : Mute On
L, Open : Mute Off
CH1
MUTE
TSD
CH2
M
TE
H, H
Mute On
VCC1
7
VCC2
VCC2
6
19
VREF
21 20
CTL2+
CTL2-
22
CTL2OUT
2
VM2+
23
VM2-
MUTE2A
3
4 18
MUTE2B
TSDS
)
PIN DESCRIPTIONS
MITSUBISHI <CONTROL / DRIVER IC>
M56781FP
2-CHANNEL ACTUATOR MOTOR DRIVER
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Symbol Function
GND
VM2+
MUTE2B
MUTE2A
MUTE1
V
CC2
V
CC1
ININ+
OP
OUT
VM1+
GND
GND
CH2 Amp. non-inverted output
CH2 mute B
CH2 mute A
CH1 mute
Power supply 2
Power supply 1
Op-Amp. inverted input
Op-Amp. non-inverted input
Op-Amp. output
CH1 Amp. non-inverted output
GND
ABSOLUTE MAXIMUM RATING(Ta = 25°C
Symbol Conditions UnitsParameter
CC Power supply
V
Io
Vin
Pd
Kθ
Tj
Topr
Tstg
Maximum input voltage
of each terminals
Operating temperature
Storage temperature
V
With infinite heatsink
With infinite heatsink 42.1
Pin No.
13
14
15
16
17
18
19
20
21
22
23
24
76
, pins
CC = VBS = 12V
4 5 8 9 16 17 193 2120
3 , , , , , , , , , pin
Symbol
GND
VM1CTL1
CTL1+
CTL1TSDS
V
REF
CTL2CTL2+
CTL2
VM2GND
OUT
OUT
Function
GND
CH1 Amp. inverted output
CH1 input Amp. output
CH1 Amp. non-inverted input
CH1 Amp. inverted input
Thermal monitor
Reference voltage input
CH2 Amp. inverted input
CH2 Amp. non-inverted input
CH2 input Amp. output
CH2 Amp. inverted output
GND
Rating
15
0 – VCC
2.97
150
-20 – +75
-40 – +150
V
mAOutput Current 900
V
WPower dissipation
°C/WThermal derating
°CJunction temperature
°C
°C
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