m56745fp Mitsumi Electronics, Corp., m56745fp Datasheet

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m56745fp

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

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M56745FP
Manufacturer:
NSC
Quantity:
21
Part Number:
M56745FP
Manufacturer:
MIT
Quantity:
20 000
DESCRIPTION
The M56745FP is a semiconductor integrated circuit designed for a
single chip controller for CD-ROM spindle motor.
M56745FP has a both (forward and reverse) motor rotation control
by the motor speed control terminal.
Also, this device includes a bias circuit for Hall Sensor, a current
limit circuit and a thermal shut down function.
FEATURES
APPLICATION
CD-ROM
BLOCK DIAGRAM
The supply voltage with wide range.
(4.5V to 13.2V)
High motor drive current (1.0A).
Motor current control for the both motor rotation is possible.
VM
13
Hu+
19
+
34
U
Hu-
20
-
Hv+
21
MATRIX
+
120˚
35
V
Hv-
22
-
Hw+
23
+
36
W
Hw-
24
-
18
Hb
Hall
Bias
PIN CONFIGURATION (TOP VIEW)
TSD
S/S
1
converter
14
C
I/I
MITSUBISHI <CONTROL / DRIVER IC>
I
GND
N.C
Rs
33
ECR
S/S
Vcc
VM
EC
Hb
C
I
Outline 36P2R-D
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
EC
15
SPINDLE MOTOR DRIVER
V/I converter
Rnf
32
Vref
M.Gnd
ECR
16
31
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
M56745FP
W
V
U
Rs
Rnf
M.GND
Hw-
Hw+
Hv-
Hv+
Hu-
Hu+
N.C: No connection
GND
Vcc
17

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m56745fp Summary of contents

Page 1

... DESCRIPTION The M56745FP is a semiconductor integrated circuit designed for a single chip controller for CD-ROM spindle motor. M56745FP has a both (forward and reverse) motor rotation control by the motor speed control terminal. Also, this device includes a bias circuit for Hall Sensor, a current limit circuit and a thermal shut down function. ...

Page 2

... SPINDLE MOTOR DRIVER Function Conditions pin maximum input voltage 13 pin maximum input voltage 17 to pins 19 24 Free Air Free Air Limits Units Min. Typ. Max. 4.5 5.0 V 5.5 10.8 12.0 13 700 M56745FP Ratings Units 1.0 V 4.5 W 1.2 9.6 mW/˚C 150 ˚C -20 – +75 ˚C -40 – +125 ˚C ...

Page 3

... Rs=0.47 Load current (IHb) 10mA. Forward Torque 0.65A ECR -5 – -50mV Current limit Reverse Torque M56745FP SPINDLE MOTOR DRIVER Limits Unit Min. Typ. Max. 0 100 A pin GND. 14 pin GND. 3.8 6 1.5 2.4 ...

Page 4

... MITSUBISHI <CONTROL / DRIVER IC> 0.792 0.852 0.902 0.423 0.320 0.226 200 300 400 Load current 100 125 150 M56745FP SPINDLE MOTOR DRIVER Top side saturation voltage 0.955 This device can use this voltage value for motor drive. 0.523 Bottom side saturation voltage 500 (mA) ...

Page 5

... CI Control voltage 15 EC V/I converter Reference voltage 16 ECR MITSUBISHI <CONTROL / DRIVER IC> VM GND 13 120˚ MATRIX TSD I/I converter – + Vref M.Gnd M56745FP SPINDLE MOTOR DRIVER Motor power supply 12V Start/Stop 1 S/S Motor current sense Rnf 31 17 Vcc 5V Power Supply ...

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