Mitsubishi M56733AFP Datasheet
MITSUBISHI <CONTROL / DRIVER IC>
)
M56733AFP
3-PHASE BRUSHLESS MOTOR CONTROL
DESCRIPTION
The M56733AFP is a semiconductor integrated circuit designed as
a single chip controller for the FDD spindle motor. The IC is
equipped with a power amplifier, hole amplifier, FG amplifier,
oscillator, speed discriminator, and various types of protection
circuits.
Equipped with MOD pin that enables 3-speed switching with a
single pin, the M56733AFP is very convenient to make system
compact.
FEATURES
●Provided with digital servo enabling high precision, high stability
and non-adjustment.
●3-speed switching function with a pin .................................. MOD
● Enable two systems .......................................................... EN•EN
● IO (peak)=1.0A
● Low capacitance of dumping capacitor
APPLICATION
FDD spindle motor (5")
RECOMMENDED OPERATING CONDITIONS
Supply voltage ................................................. 10.8 – 12.0 – 13.2 V
Oscillation frequency .......................................................... 492 kHz
Maximum output current ..................................................... 800 mA
FG amplifier input signal level .............................. 5 mVp-p or more
PIN CONFIGURATION(TOP VIEW
36
35
34
33
325
316
30
M56733AFP
29
289
27
2611
2512
24
23
21
20
ERROUT
19
FG
FGIN
FGMon
GND
OSCIN
OSC
DSC
1
CC
V
2
HB
–
3
IN
+
4
i
EN
7
8
10
13
EN
14
15 22
OUT
16
MOD
17
FLT
18
OUT
Outline 36P2R-D
U
V
W
+
H
U
–
HU
RF
GND
+
V
H
–
HV
+
HW
–
HW
ERRIN
–
BLOCK DIAGRAM
U
36
31RF
1VCC
33
32
+
–
U
U
H
H
LOGIC
24
+
V
H
V
35
23
H
W
34
CTL
EN
CONTROL
22
–
V
21 3
+
–
W
HW
H
Hall
Bias
2
VREF
FLT
17
EN
6
OVSD
TSD
13
EN
ERR
VREF
FG
20
ERR
FG
–
OUT
FG
4
+
IN(–)
ERR
19
5
FG
(Monitor)
OUT
DSC
18
DISCRIMINATOR
1 / N
OSC
14
15
IN
OSC
OUT
OSC
7
––
12
GND
25
30
MOD
16
3-PHASE BRUSHLESS MOTOR CONTROL
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C)
Symbol Ratings UnitParameter Conditions
MITSUBISHI <CONTROL / DRIVER IC>
M56733AFP
VCC
Io
VHD
VIN
fIN
Pt
Kθ
Tj
Topr
Tstg
Supply voltage
Output current
Hole amplifier, differential input voltage
Apply voltage at pin
Clock frequency
Power dissipation
Thermal derating
Temperature at junction
Operating temperature
Storage temperature
TYPICAL CHARACTERISTICS
Thermal derating (Maximum rating)
5.0
4.5
4.0
3.0
2.0
With infinite heat
sink used
Free air
Between 21 and 22, between 23 and 24,
between 32 and 33 (pin number)
6,13,21 – 24,32,33 (pin number)
Use of infinite heat sink
Use of infinite heat sink
15
1.0
5
CC
0 – V
1000
4.5
27.8
150
-20 – 75
-40 – 125
V
A
V
V
kHz
W
°C/W
°C
°C
°C
Power dissipation Pdp (W)
1.0
0
50 125
25 150
Ambient temperature T
75
1000
a (°C)
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