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CDX-GT52UM/GT470UE/GT470UM/GT472UE/GT472UM/GT474UM/GT520U/GT525U
IC1300 OZ539IGN-A1-0-TR
BST 1
S
HDR
Q
R
LX 2
OVER CURRENT
PROTECTION
VIN 3
EN_SYS 4
USBOUT 5
FB_USB 6
VS
SEL
USBIN
7
VOUT_SYS (USBIN)
FAULT PROTECTION
SYNC 8
– KEY Board –
IC901
PT16512-LQ
64
ADDRESS
DETECTOR
PWM
DRIVER
GP1/SEG1/PW1 1
GP2/SEG2/PW2 2
GP3/SEG3/PW3 3
GP4/SEG4 4
GP5/SEG5 5
GP6/SEG6 6
GP7/SEG7 7
GP8/SEG8 8
SEG9 9
SEG10 10
SEG11 11
SEG12 12
SEG13 13
SEG14 14
SEG15 15
SEG16 16
OSCILLATOR
REFERENCE
GENERATOR
+
ADJUSTMENT
GENERATOR
CHARGE
PUMP
OVER-CURRENT
LIMIT
2V
+
UVLS
–
USB FAULT
PROTECITON
63
62
61
60
59
SHIFT
REGISTER
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
16
VREF
15
RT
14
GNDA
13
SS_SYS
12
EN_USB
11
VIC_USB
10
ISET_USB
9
FLT_USB
58
57
56
55
54 53 52 51
COMMON
DRIVER
CLOCK
GENERATOR
SEGMENT DRIVER
&
LATCH
50
49
48
SEG48
47
SEG47
46
SEG46
45
SEG45
44
SEG44
43
SEG43
42
SEG42
41
SEG41
40
SEG40
39
SEG39
38
SEG38
37
SEG37
36
SEG36
35
SEG35
34
SEG34
33
SEG33
45
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