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PDF M56745FP Data sheet ( Hoja de datos )

Número de pieza M56745FP
Descripción SPINDLE MOTOR DRIVER
Fabricantes Mitsubishi 
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No Preview Available ! M56745FP Hoja de datos, Descripción, Manual

MITSUBISHI <CONTROL / DRIVER IC>
M56745FP
SPINDLE MOTOR DRIVER
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
qThe supply voltage with wide range.
(4.5V to 13.2V)
qHigh motor drive current (1.0A).
qMotor current control for the both motor rotation is possible.
APPLICATION
CD-ROM
PIN CONFIGURATION (TOP VIEW)
S/S 1
2
3
N.C 4
5
6
7
8
GND
9
10
11
12
VM 13
CI 14
EC 15
ECR 16
Vcc 17
Hb 18
36 W
35 V
34 U
33 Rs
32 Rnf
31 M.GND
30
29
28
GND
27
26
25
24 Hw-
23 Hw+
22 Hv-
21 Hv+
20 Hu-
19 Hu+
Outline 36P2R-D
N.C: No connection
BLOCK DIAGRAM
UV W
34 35 36
VM 13
S/S
Rs
Rnf M.Gnd
Vcc
1
33 32 31
17
Vref
120˚
MATRIX
I/I
converter
TSD
+-
+-
+-
Hall
Bias
19 20
Hu+ Hu-
21 22
Hv+ Hv-
23 24
Hw+ Hw-
18
Hb
14
CI
V/I converter
15 16
EC ECR

1 page




M56745FP pdf
APPLICATION CIRCUIT
MITSUBISHI <CONTROL / DRIVER IC>
M56745FP
SPINDLE MOTOR DRIVER
Motor power supply
Hall bias
resistance
Hu
Hv
Hw
19
Hu+
20
Hu-
21
Hv+
22 Hv-
23
Hw+
24
Hw-
18 Hall
Bias
14
CI
GND
120˚
MATRIX
TSD
I/I
converter
Control voltage
Reference voltage
15
EC
16
ECR
V/I
converter
Vref
VM
13
34
U
35
V
36
W
12V
1
S/S
Start/Stop
Motor current sense
Rs 33
32
Rnf
31
M.Gnd
17
Vcc
5V
Power Supply

5 Page










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