(No.YA698<Rev.001>)2-13
2-14(No.YA698<Rev.001>)
MAIN PWB ASS'Y (4/28)
[Power Regulation]
HU-71100005
lt-26_32db1bu_0514_2/30_0.0
1
1
2
2
3
3
4
4
5
5
6
6
A
A
B
B
C
C
D
D
DDR_VRF
+5V4STB
+3V3
+3V3
+5V
+3V3
+5V
+1V8
+3V3_D
+3V3_D
+3V3H
+5VSTB
+5V
VDDR_MEM
+1V2
+3V3
+1V8
+3V3_A
All location are from 21 to 80
GND_A
1V8 Power Branch
MAX 29mA
R1
[Douglas DDR]
+1.816V,
Max.781mA
STAND-BY POWER
R1
R2
R2
check 1V2 ripple noise
MAX 1.5A
+5.03V
MAX 642mA
Max.3A
Max.3A
3V3 Power Branch
R2
R1
+3.36V, Max.2.790A
VOUT = 0.925V * (1 + R1/R2)
NORMAL POWER
Vout=0.8V(R1+R2)/R2
[Douglas Core]
+1.2V,
Max.1634mA
Vout=0.8V(R1+R2)/R2
DGND
C41
106p/10V/2012
C59
105p/16V/1005
C54
106p/10V/2012
R39
000/1005
TP27
PCB_TP10
1
L16
BLM31PG601SN1
L24
BLM18PG300SN1D
C42
106p/10V/2012
C52
106p/16V/2012
U25
LD29150PT/P-PAK 5P
/INH
1
VIN
2
GND
3
VOUT
4
ADJ
5
GND
6
C27
332p/50V/1005
C22
103p/50V/1005
C43
103p/50V/1005
TP22
PCB_TP10
1
C45
104p/16V/1005
C33
105p/16V/1005
L23
BLM18PG300SN1D
C21
106p/16V/2012
R41
103/F/1005
C44
226p/6.3V/2012
C64
104p/16V/1005
L25
BLM18PG300SN1D
C49
104p/16V/1005
C46
104p/16V/1005
R21
104/1005
TP28
PCB_TP10
1
TP23
PCB_TP10
1
R24
562/1005
C66
103p/50V/1005
C30
OPEN-561p/50V/1005
C51
100uF/16V/MVK/S
C47
100uF/16V/MVK/S
R23
912/F/1005
C61
226p/6.3V/2012
C24
106p/10V/2012
C65
OPEN-105p/16V/1005
R36
593/F/1005
C63
106p/16V/2012
C60
104p/16V/1005
TP24
PCB_TP10
1
R37
104/F/1005
R29
104/F/1005
C58
OPEN-104p/16V/1005
L21
4.7uH/SPC7040-4R7/3.5A
C28
OPEN-106p/16V/2012
U24
RT9018B25PSP
EN
2
VDD
4
VIN
3
NC
5
PGOOD
1
VOUT
6
ADJ
7
GND
8
TAP
9
C62
100uF/25V/BXE/S
C26
100uF/25V/BXE/S
TP29
PCB_TP10
1
C50
OPEN-106p/2012
R33
103/1005
TP25
PCB_TP10
1
D21
OPEN-SX34
C29
104p/16V/1005
C25
104p/16V/1005
C69
104p/16V/1005
C34
104p/16V/1005
C68
104p/16V/1005
TP30
PCB_TP10
1
TP21
PCB_TP10
1
C48
104p/16V/1005
R32
6043/F/1005
C32
Open_104p/16V/1005
R42
000/1005
U23
MP2121DQ
BS
5
FB
1
SW
3
IN
4
IN
7
POK
6
SW
8
GND
9
GND
2
EN/SYNC
10
GND-PAD
11
R34
753/F/1005
C56
104p/16V/1005
R31
304/F/1005
C31
106p/16V/2012
L22
SPC6025-1R0M
C57
100uF/25V/BXE/S
R35
102/F/1005
R22
243/F/1005
C53
104p/16V/1005
R30
104/F/1005
TP26
PCB_TP10
1
C23
106p/16V/2012
C67
106p/10V/2012
R38
102/F/1005
C55
104p/16V/1005
U21
MP2307
BS
1
IN
2
SW
3
GND
4
FB
5
COMP
6
EN
7
SS
8
GND_
P
9
R40
1692/F/1005
U22 RT9167-50PB
VOUT
5
BP
4
EN
3
GND
2
VIN
1
MAIN PWB CIRCUIT DIAGRAM (4/28) [Power Regulation]