Schematic Diagrams
+VDD5, +VDD3, +3V, +5V, +1.25V B - 31
B.Sch
em
atic D
iag
rams
+VDD5, +VDD3, +3V, +5V, +1.25V
+VDD3
VIN
VL
VIN
VIN1
VL
GND_F
+VDD5
GND_F
GND_F
GND_F
GND_F
GND_F
GND_F
GND_F
VL
+5VS
+5VH8
DF1
VIN
+VDD3
DF2
DF2
DF2
VL
DF2
+VDD5
+1.25V
DF1
DF1
VIN
DF2
VIN1
+VDD5
DF2
DF2
DF1
+2.5V
+VDD5
+VDD5A
+12V
+12V+
+VDD5A
DF1
VL
+12V 8,20,21,23,26,28,29,32
+VDD5 9,13,16,19,23,26, 29,32,34, 36
VIN1 29,36
VIN 16,29,31,32,34,36
+VDD3 4,8,13,16,19,23,29,31
+5VS 8,11,14,16,19,22,23,26,28,29,33,34,35,36
+5VH8 22,28,29
VDDIOFB_L
4
VDDIOFB_H
4
SUSC#
4,13,22
PGOOD 33
+1.25V 3,4,7
+2.5V 3,4,5,6,7,16,33
SUSB
29,34
TEST 29,32
DDON
22,24,29
TRMTRIP# 4,34
Z3019
Z3017
V+
Z3018
Z3021
Z3010
Z3007
Z3002
Z3004
Z3011
Z3013
V+
Z3023
Z3008
Z3006
Z3020
Z3015
Z3001
Z3031
Z3025
Z3027
Z3028
Z3029
Z3030
Z3009
Z3026
Z3024
VDDP
Z3036
Z3054
Z3045
Z3041
VDDP
Z3035
Z3042
Z3040
Z3038
Z3051
Z3043
EN_DUAL2.5V
Z3039
Z3055
Z3047
Z3044
Z3046
Z3050
Z3048
TEST
Z3037
Z3053
Z3069
Z3064
Z3070
Z3071
Z3005
Z3
01
2
Z3034
Z3003
Z3066
Z3068
Z3052
Z3049
Z3073
Z3058
Z3057
Z3060
Z3061
Z3063
Z3016
Z3056
Z3059
Z3062
Z3022
Z3032
Z3033
D46
1SS355
A
C
D45
1SS355
A
C
PR66
174K_1%
PL6
6.8uH
1
2
PC103
0.01U
PR61
20K_1%
PR112
22.1K_1%
PD24
1SS355
A
C
PR63
40.2K_1%
PR110
100K
R642
910K_1%
+
PC99
10U_25V_1206
PC105
0.047u
C504 1U
C507
0.1U
1
2
T
PD23
1SS355
A
C
C514
0.1U
PC52
10
U
_2
5V
_
12
06
PR105
15K
PR69
5m_2512
PL3
4. 7UH
PR102 0
PC90
10U_25V_DIP
PU6
SC4501
1
8
3
4
2
7
6
5
11
10
9
COMP
IN
SHDN#
GND1
FB
SW2
SW1
GND2
G
ND_
E
A
RT
H
SS
ROSC
+
C460
220U_4V_7343
1
2
PC69
1000P
PJP2
5mm
1
2
PR111
1K
PC62
0.1U
R653
9.76K_1%
1
2
R668
100K
C458
10U_1206
D53
SM140A
A
C
Q97
2N7002
G
D
S
PR71
0
C694 0.1U
D35
SM340A
A
C
PC63
0.1U
PC94
0.1U
PR72
1M
PC101
10
U
_
1
2
0
6
PR77
19.1K_1%
C703
1000P
1
2
PC91
10U_25V_DIP
PR68
5m_2512
PC73 3 3P
R447
20K
1
2
Q82
RQA130N03
3
4
8
2
5
6
7
1
..
G
D
S
D,
.
D.
,
R651
0
PR67
10K
PC102
0.1U
SC1486
U28
SC1486ITSTR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PG
N
D
1
DL1
VDDP1
ILIM1
LX1
DH1
BST1
REFIN
TON2
REFOUT
VCCA2
FBK2
PGOOD2
AG
ND
2
PG
N
D
2
DL2
VDDP2
ILIM2
LX2
DH2
BST2
EN/PSV1
TON1
VOUT1
VCCA1
FBK1
PGOOD1
AG
N
D
1
PC
59
10
U
_25
V
_
120
6
PQ29
RQA130N03
3
4
8
2
5
6 7
1
..
G
D
S
D,
. D.
,
PD22
SM340A
A
C
+
PC92
1
0
U
_
25V
_1
206
PC104
2200P
R667
0
1
2
PQ40
2N7002
G
D
S
+
PC93
10U_25V_1206
PU5
LTC3728LX
24
26
25
22
30
31
3
23
1
2
5
4
7
6
20
17
14
15
18
12
11
9
8
21
28
13
27
19
10
16
29
32
33
BOOST1
TG1
SW1
BG1
SENSE1-
PLLIN
VI
N
VOSENSE1
PLLFLTR
ITH1
FCB
3.3VOUT
SGND
INTVCC
BOOST2
TG2
SW2
BG2
SENSE2-
VOSENSE2
ITH2
EXTVCC
RUN/SS1
RUN/SS2
PGOOD
PGND
NC
NC
NC
NC
PAD
R663
0
PC60
0.01U
PQ39
AO3409
G
D
S
Q64A
SI4834
5
4
3
6
C740
0. 1U
R678
20K
PR74
105K_1%
PR113
10K
PR70
*0
L43
2.5UH
1
2
+
PC54
220U_6.3V_7343
R640
16.2K_1%
1
2
PR107
15K
+
C436
220U_4V_7343
1
2
PC74
*0.01U
PC68
1000P
R448
18K_1%
1
2
PR106
*0
R664
10K
PR59
0
PR99
0
C692
0.1U
PR104
*0
PR96
0
R652
750K_1%
C745
0.1U
PC57
0.01U
PD20
ZD5.6V
A
C
PC67
0.1U
Q81
RQA200N03
3
4
8
2
5
6
7
1
..
G
D
S
D,
.
D.
,
C506
*0. 1U
PR95
0
R654
0
C510
1U
1
2
R444
10K
PL5
4.7UH
C689
10U_25V_DIP
R440
0
+
PC53
220U_6.3V_7343
+
C508
330U_2.5V_7343
1
2
PQ31
RQA130N03
3
4
8
2
5
6
7
1
..
G
D
S
D,
.
D.
,
PC66
0.1U
+
PC100
10
U
_2
5V
_
12
06
R666
4.7K
R644
0
Q84
2N7002
G
D
S
C693
0.1U
D34
SM340A
A
C
PR62
0
PQ30
RQA200N03
3
4
8
2
5
6 7
1
..
G
D
S
D,
. D.
,
PQ35
2N7002
G
D
S
+
C509
330U_2.5V_7343
1
2
PR76
19.6K_1%
C505 1000P
1
2
PR78
0
PR101
1M
T
C702 1000P
1
2
Q83
2N7002
G
D
S
R655
10K_1%
1
2
PC65
0.1U
T
C503
*100P
1
2
R646
10
1
2
PR103
0
C512
1U
1
2
C435
0.01U
1
2
PC61
10U_25V_1206
PQ34
2N7002
G
D
S
R641
0
1
2
PJP1
5mm
1
2
PC97 1 00P
Q64B
SI4834
7
2
1
8
PR75
60.4K_1%
R449
10
1
2
C690
10U_25V_DIP
R446
10K
PC58
0.1U_X7R
PC64
0.1U
Q70
*2N7002
G
D
S
PC98
10U_0805
PC71
*100P
R443
*0
R445
4.7K
+
C496
220U_4V_7343
1
2
L57
4.7UH_S39
1
2
PQ28
RQA200N03
3
4
8
2
5
6
7
1
..
G
D
S
D,
.
D.
,
J4
OPEN_8A
1
2
PC95
0.1U
PC56
0.01U
PC96
10 00P
PR73
0
R645
68.1K_1%
1
2
R636
*0
C695
100P
1
2
PC70
2200P
T
C499
0.1U_X7R
1
2
PR100
0
C511
0.1U
1
2
C691
1U
1
2
C455
0.1U
T
+
PC51
*220U_6.3V_7343
J7
OPEN_10mil
1
2
C457
10U_1206
1
2
C502
0.01U
1
2
PC72 33 P
T
C456
0.1U
1
2
+
PC50
220U_6.3V_7343
J5
OPEN_5A
1
2
C742
0.1U
Q69
2N7002
G
D
S
C513
1U
1
2
PC55
0.1U
+
PC108
22
0U
_
6.
3
V
_
7
343
PR114
10K
FCB:0V for continuous mode
Open for burst mode
5V for constant mode
PLLFLTR:0V for 220KHZ
5V for 640KHZ
7A
5A
12/13
2.6V@8A
1.3V@3A
DDR VTT Pow er saving
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
5 / 2 0 C h a n g e
6 / 1 7 C h a n g e
0.7A
94/7/25
Allen
94/7/25
Allen
94/7/25
Allen
94/7/25
Allen
PIN11 GND PAD
94/11/09
94/11/16 Kevin
DEL DUAL_PG
94/10/31 Kevin
AO4900 Change SI4834
94/11/11 Kevin
94/11/11 Kevin
94/11/11 Kevin
94/11/11 Kevin
Sheet 31 of 45
+VDD5, +VDD3,
+3V, +5V, +1.25V