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IC401 MPC17A52FTA
72
SWITCHING
POWER
CIRCUIT 3
VLG3
1
RF21
2
REFERENCE
PAPC
3
APCREF
4
BAND GAP
VREF
5
REFERENCE
L4
6
SWITCHING
RF2
7
POWER
INM2
8
CIRCUIT 2
VG
VG
9
POWER CIRCUIT
VG
10
GND
VC
SYNC
11
CLOCK
WAKEUP
12
VC
SYSTEM
CLOCK
13
CONTROL,
DATA
14
INPUT/OUTPUT
LATCHC
15
VC
FI3
16
RI3
17
18
HPI1
19
20
21
IC351 TA2120FN
BST
BST
SW
OUT
24
23
ADD
B
BST
ADD
2
1
BST
ADD
NF
OUT
71
70
69
68
67
66
VC
PRE-
SUB
DRIVER
VG
VC
UP SIDE
PRE-DRIVER
VC
VC
VG
SAW TOOTH
WAVEFORM
OCCURRENCE
VC
CIRCUIT
VC
D2 (H BRIDGE/HEADPHONE)
CONTROLLER
D3 (HPON)
VG
VC
PREDRIVER
22
23
24
BIAS
PW
MT
MT
IN
BIAS
SW
SW
TC
20
19
18
22
21
BIAS
PW
MT
SW
SW
OUT B
A
PW
PW
C
B
PWC
SW
3
4
5
7
6
RF IN PWC
VCC
OUT B OUT C OUT A
SW
65
64
63
62
61
VIN
VIN
DOWN SIDE
PRE-DRIVER
VG
VG
DOWN SIDE
PRE-DRIVER
LOW VOLTAGE DETECTOR
VG
VC
CURRENT, CONSTANT
BATTERY CHARGE CIRCUIT
CONTROLLER
VC
PREDRIVER
25 26
27
28
29 30
31
BEEP
ATT
GND
IN B
IN A
IN
SW
17
16
15
13
14
ALC
ALC
BEEP
ATT
SW
OUT A
PW
A
ALC
DET
8
9
10
11
12
PWR
MIX
ALC
ALC
GND
OUT
IN
DET
– 29 –
60
59
58 57 56
55
CHARGING BATTERY
VOLTAGE DETECTOR
CIRCUIT
VC
DCIN
VG
UP SIDE
PRE-DRIVER
VG
54
53
52
51
50
VC
VC
VG
SWITCHING POWER
CIRCUIT 1
49
VIN
48
47
LINEAR REGULATOR
46
45
DCIN
44
LINEAR, CONSTANT
43
VOLTAGE CHARGING
42
41
DCIN
40
39
38
37
D1 (DRV MUTE)
VG
32
33 34
35
36
RF1
INM1
DTC1D
DTC2D
MODE2
MODE1
RSTB
VCP
VC
DCIN
RF4
INM4
RS
CHGSW
RI2
FI2
RI1
FI1
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