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IC401 MPC17A52FTA
72
SWITCHING
POWER
CIRCUIT 3
1
VLG3
RF21
2
REFERENCE
PAPC
3
APCREF
4
BAND GAP
VREF
5
REFERENCE
L4
6
SWITCHING
RF2
7
POWER
INM2
8
CIRCUIT 2
VG
9
VG
POWER CIRCUIT
VG
GND
10
VC
11
SYNC
CLOCK
WAKEUP
12
VC
SYSTEM
CLOCK
13
CONTROL,
DATA
14
INPUT/OUTPUT
LATCHC
15
VC
FI3
16
RI3
17
18
HPI1
19
20
21
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
65
64
63
62
61
VIN
VIN
DOWN SIDE
PRE-DRIVER
VG
VG
DOWN SIDE
PRE-DRIVER
LOW VOLTAGE DETECTOR
VG
SWITCHING POWER
LINEAR REGULATOR
VC
LINEAR, CONSTANT
CURRENT, CONSTANT
VOLTAGE CHARGING
BATTERY CHARGE CIRCUIT
CONTROLLER
VC
PREDRIVER
25 26
27
28
29 30
31
– 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
CIRCUIT 1
49
VIN
48
47
46
45
DCIN
44
43
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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