m56745fp Mitsumi Electronics, Corp., m56745fp Datasheet - Page 3

• Manufacturer Part Number: m56745fp
• Description: Spindle Motor Driver
• Manufacturer: Mitsumi Electronics, Corp.

ELECTRICAL CHARACTERISTICS (Ta=25˚C, VM=12V, Vcc=5V, unless otherwise noted)
ELECTRICAL CHARACTERISTICS (Vcc=5V, VM=12V, Ta=25˚C, Unless otherwise noted)
Icc1
Icc2
Vsat
ECdead-
ECdead+
ECR
EC
Gio
Von
Voff
VH (IN)
VH (INH)
Vlim
VHb
IHb
Symbol
–
Figure 1. The characteristics of the control voltage and motor current (Torque).
Sleep Mode Supply current-1
Sleep Mode Supply current-2
Saturation voltage
Control voltage
dead zone
Reference voltage input range
Control voltage input range
Current gain
Motor start voltage
Motor stop voltage
Sensor amp. common mode input range
Sensor amp. input signal revel
Current limit
Hall bias terminal output voltage
Hall bias terminal sink current
Current limit
+5 – +50mV
0.65A/V
Parameter
0
Reverse Torque
Forward Torque
-5 – -50mV
Current limit
0.65A/V
Top and Bottom saturation voltage.
Load current 500mA.
EC < ECR
EC > ECR
Rs=0.47
Rs=0.47
Load current (IHb) 10mA.
13
17
16
15
19
19
1
1
pin Input Current (EC=ECR=2.5V),
pin Input Current (EC=ECR=2.5V),
pin Input voltage range.
pin Input voltage range.
pin input voltage when makes the motor start up.
pin input voltage when makes the motor stop.
to
to
24
24
pins input range.
pins input signal revel.
EC - ECR
Conditions
+
MITSUBISHI <CONTROL / DRIVER IC>
14
14
pin GND.
pin GND.
The relationship between the EC
(control voltage), ECR (reference
voltage) and the torque is as
shown in Figure 1.
The current gain is 0.65A/V in the
both torques and a dead zone is
5mV to 50mV.
SPINDLE MOTOR DRIVER
Min.
0.55
0.45
-50
1.9
1.0
3.5
1.2
1.0
+5
50
M56745FP
Limits
0.65
0.50
Typ.
+25
3.8
1.5
-25
2.1
1.2
0
Max.
0.75
0.55
100
+25
6.0
2.4
2.3
4.0
1.5
4.5
1.5
10
-5
Unit
A/V
mA
mV
mV
mA
V
V
V
V
V
V
A
V
A