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Schematic Diagrams
+VDD3, +VDD5, +VDD12
+VDD3,+VDD5,+VDD12
+VDD3
1
OPEN_4A
Sheet 35 of 44
220U/6.3V_D
+VDD3, +VDD5,
+VDD12
B - 36 +VDD3, +VDD5, +VDD12
C699
C700
C696
C697
10u/25V_12
10u/25V_12
0.1u
0.01u_04
L38
4A
R388
PJ1
4.7UH
2
10m_2512
C653
C661
+
+
C652
C654
*220U/6.3V_R
0.1u
0.01u_04
C713
R421
*100p_04
60.4K_1%
R414
C714
18.7K_1%
33P
R428
0
VL
R422
*0
FCB:0V for continuous mode
Open for burst mode
C732
0.1u_04
5V for constant mode
C726
0.1u_04
C725
0.1u_04
C727
0.1u_04
C731
0.1u_04
D41
SCS355V
A
C
+VA
+VIN1
D43
SCS355V
A
C
+VINA
C687
0.01u_04
+VIN1
+VIN
R392
0
VL
C695
V+
10u_08
2A
C694
C688
D44
0.1u
SCS551V
0.1u
U28
C698
LTC3728LX
0.1u
D42
8
Z3601
24
20
A
C
BOOST1
INTVCC
Q83A
SP8K10
Z3602
26
17
Z3613
SCS551V
TG1
BOOST2
4A
Z3603
25
14
Z3614
SW1
TG2
Z3604
22
15
Z3615
BG1
SW2
Z3605
C708
30
18
Z3616
SENSE1+
BG2
1000p_04
Z3617
3
Z3606
31
12
C702
SENSE1-
SENSE2+
Q83B
Z3607
1
11
Z3618
1000p_04
VOSENSE1
SENSE2-
SP8K10
3
9
Z3619
PLLIN
VOSENSE2
C720
R425
C716
100p_04
15K_1%_04
1000p_04
8
Z3620
Z3621
ITH2
R424
15K_1%_04
Z3608
Z3609
5
ITH1
C722
33P
7
27
3.3VOUT
PGOOD
C721 33P
10
NC
R401
*0
Z3610
21
16
+VDD5
EXTVCC
NC
29
NC
32
NC
Z3611
4
28
Z3622
FCB
RUN/SS1
C717
13
Z3623
RUN/SS2
0.01u_04
R427
0
Z3612
2
VL
PLLFLTR
C707
6
19
SGND
PGND
R426
0.1u_04
*0
R410 0
PLLFLTR:0V for 220KHZ
5V for 640KHZ
+VIN
C648
C649
10u/25V_12
10u/25V_12
2A
C693
0.1u
8
Q82A
SP8K10
L37
4.7UH
R384
4A
10m_2512
3
R408
Q82B
SP8K10
105K_1%
C275
C278
0.01u_04
C712
0.1u_04
2200p
R416
+VDD5_PG [17]
19.1K_1%
R404
1M
V+
Q85
Q86
R402
1M
2N7002
C703
2N7002
VL
G
0.1u_04
G
VL
R412
10K_04
R411
Z3624
Q84
10K_04
2N7002
G
TRMTRIP# [4]
+VINA [31]
+VA [26]
+VIN [25,26,31,32,33,34]
+VIN [25,26,31,32,33,34]
+VDD3 [8,17,18,31]
+VDD5 [2,8,26,31,32,33,34]
+VDD5
4A
J9
1
2
OPEN_4A
+
+
C636
C635
220U/6.3V_D
*220U/6.3V_D
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