Mitsubishi M56755AFP Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
M56755AFP
SPINDLE MOTOR DRIVER
DESCRIPTION
The M56755AFP is a semiconductor integrated circuit designed for
a single chip controller for CD-ROM spindle motor.
M56755AFP has a both (forward and reverse) motor torque control
by the motor speed control terminal.
M56755AFP has the several braking mode that an user can flexibly
select in order to generate the reverse torque. Also, this device
includes a bias circuit for Hall Sensor, a current limit circuit and a
thermal shut down function.
FEATURES
●3.3V DSP available.
●The supply voltage with wide range.
(4.5V to 13.2V)
●High motor drive current (1.2A).
●Motor current control for the both motor torque is possible.
●Reverse torque mode select [SHORT BRAKING, etc]
●Sleep mode
●Hall amplifier sensitivity select
●Automatic stop select (with reverse detected signal pin)
APPLICATION
Above 8 times speed CD-ROM, DVD, DVD-ROM etc.
PIN CONFIGURATION (TOP VIEW)
1
S/S
2
RDS
3
FG
4
I
C
MODE2
MODE1
7
8
GND GND
13
M
V
14
VCC2
15 22
EC
16
ECR
17
CC1
V
18
HB
36
35
34
33
325
316
30
M56755AFP
29
289
2710
2611
2512
24
23
21
20
19
W
V
U
S
R
MODE3
MODE4
HwHw+
HvHv+
HuHu+
BLOCK DIAGRAM
VM
13
VCC2
14
MODE1
MODE2
MODE4
MODE3
FG
RDS
6
5
31
32
3
2
BRAKING
MODE
CHANGE
SENSE
FG
RDS
W
34 35 36
120°
MATRIX
+- +- +-
19 20 21 22 23 24
Hu+ Hu- Hv+ Hv- Hw+ Hw-
S/S
1 1733
I / I
Converter
TSD
Hall
Bias
18
HB
4
I
C
Outline 36P2R-D
RSVU
-
+
+
15 16
EC
Vref
V/I Converter
VCC1
7 to 12
GND
25 to 30
GND
ECR
PIN FUNCTION
(c)
j
MITSUBISHI <CONTROL / DRIVER IC>
M56755AFP
SPINDLE MOTOR DRIVER
Symbol FunctionPin No. Pin No.
1
S/S
2
RDS
3
FG
4
C
I
5
MODE2
6
MODE1
7 12
–
13
14
15
16
17
18
*The pin[RDS] and pin[FG] are with pull-up resistor (10kohm).
GND
V
M
VCC2
EC
ECR
V
CC1
HB
2 3
Start/ Stop
Reverse detected signal
Frequency generator output
Phase Compensation
Reverse torque mode select 2
Reverse torque mode select 1
GND
Motor supply voltage
12V supply voltage
Motor speed control
The reference voltage for EC
5V supply voltage
Bias for Hall Sensor
19
20
21
22
23
24
25 30
–
31
32
33
34
35
36
Symbol
Hu+
HuHv+
HvHw+
HwGND
MODE4
MODE3
R
S
U
V
W
Hu+ Sensor amp. input
Hu- Sensor amp. input
Hv+ Sensor amp. input
Hv- Sensor amp. input
Hw+ Sensor amp. input
Hw- Sensor amp. input
GND
Hall amplifier sensitivity select
Automatic stop select
Motor current sense
Motor drive output U
Motor drive output V
Motor drive output W
ABSOLUTE MAXIMUM RATING (Ta = 25°C)
Symbol Conditions UnitsParameter
M Motor supply voltage pin maximum input voltage 16
V
VCC2
V
CC1
Io
VH
Pt
Kθ
T
Topr
Tstg
Output current
Sensor amp.
Differential input range
Power dissipation
Thermal derating
Junction temperature
Operating temperature
Storage temperature
*Note1; There is no overing Pt (power dissipation) or the area of safety operation.
13
14
17
pin maximum input voltage
*Note 1
19 24
– pins
Free Air
Function
Rating
4.5
1.2
9.6
150
-20 – +75
-40 – +125
V
V12V supply voltage pin maximum input voltage 16
V5V supply voltage 7.0
A1.5
V
WFree Air
mW/°C
°C
°C
°C
MITSUBISHI <CONTROL / DRIVER IC>
[
]
]
µAµ
M56755AFP
SPINDLE MOTOR DRIVER
RECOMMENDED OPERATING CONDITIONS
Symbol
CC1 5V Power supply
V
CC2 V
VM
Io
12V Power supplyV
Motor Power supply
Output drive current
Parameter
Min.
4.5
4.5
4.5
—
Limits
Typ.
5.0
12.0
12.0
—
Max.
5.5
13.2
13.2
700
ELECTRICAL CHARACTERISTICS (VCC = 5V, VCC2 = 12V ,VM = 12V, Ta = 25°C unless otherwise noted.)
Symbol Conditions UnitsParameter
CC1 Sleep Mode Supply current - 1 and pin total Input Current [ pin lo or open]
I
ICC2
ICC3
Vsat
ECdead-
ECdead+
ECR
EC
Gio
Vlim
VH com
VHmin1
VHmin2
Sleep Mode Supply current - 2
Supply current - 3
Saturation voltage
Control voltage dead zone
Reference voltage Input range
Control voltage Input range
Control gain
Control limit
Hall sensor amp common
mode input range
Hall sensor amp.
input signal revel
13 14 1
17
pin Input Current [ pin lo or open]
17
pin Input Current (EC = ECR = 2.5V) [ pin Hi]
1
Top and Bottom saturation voltage
Load current 500mA
EC < ECR
EC > ECR
pin Input voltage range [3.3V DSP available]
16
15
pin Input voltage range [3.3V DSP available]
Io = Gio / Rsense
A/V
Ilim = Vlim / Rsense [A
– pins input range
19 24
19 24
– pins input signal
MODE4 = open
MODE4 = GND
Units
V
V
mA
Limits
Min.
—
—
1
—
—
-40
0
0.5
0.5
0.25
0.27
1.2
50
35
Typ.
0
—
—
1.2
-21
+21
1.65
1.65
0.3
0.3
—
—
—
Max.
100
500
6.0
1.9
0
+40
4.0
4.0
0.35
0.33
4.5
—
—
mVp-p
A
mA
V
mV
V
V
V/V
V
V
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