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6-7. IC BLOCK DIAGRAMS
IC551
SC111257FCR2
42
PGNDW
43
WO
44
VMVW
45
VO
46
PGNDUV
47
UO
48
VMU
49
GND2
50
CPW1
51
CPV1
52
CPU1
53
COM
54
CPWO
55
CPVO
56
IC301
TA2131FL (EL)
18
17
PW
MT
SW
SW
TC MT
19
20
VCC
INR
21
INL
22
PW
BEEP
23
OUTB
A
BEEP
24
OUTA
1
2
3
41
40
39
38
VC VG
3 PHASE
CONTROL
1
2
3
4
5
16
15
14
13
BST
BEEP
V REF
SW
ADD
BST1
PW
BST2
B
BST
AGC
4
5
6
37
36
35
34
33
VC VG
PRE DRIVER
VC
H-BRIDGE
CONTROL
VC
H-BRIDGE
CONTROL
VC VG
VC
PRE DRIVER
BIAS
6
7
8
9
10
12
VREF
LPF1
11
10
BST NF1
9
LPF2
BST NF2
8
7
BST OUT
32
31
30
29
28
VC VG
PRE DRIVER
VC
27
H-BRIDGE
CONTROL
26
25
24
VG
23
VC
22
21
20
19
18
VC
17
H-BRIDGE
CONTROL
16
VC
VG
PRE DRIVER
15
11
12
13
14
MZ-E501
VM4
R14
F14
R13
F13
VG
VC
GND1
PWM24
F11
R11
F12
R12
VM2
9
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