sc1486aitstr Semtech Corporation, sc1486aitstr Datasheet - Page 18

• Manufacturer Part Number: sc1486aitstr
• Description: Complete Ddr1/2/3 Power Supply Controller
• Manufacturer: Semtech Corporation

Layout Guidelines (Cont.)
Note R7 is present to facilitate isolation of power ground and VSSA1 during layout
Note R8 is present to facilitate isolation of power ground and VSSA2 during layout
POWER MANAGEMENT
Application Information (Cont.)
2006 Semtech Corp.
1.8V, 10A
C12
0u1
0402
10u/25V
PGOOD2
1210
27
22
24
26
23
25
28
3
1
6
7
5
4
2
C4
U1
VDDP1
PGND1
DH1
BST1
LX1
ILIM1
DL1
PGD1
EN/PSV1
VOUT1
FB1
TON1
VCCA1
VSSA1
R15 470k
+
10u/25V
C13
330u/25m
7343
R7
0R
0402
1210
0402
C3
5VSUS
0u1/25V
PGOOD1
SC1486A
+
REFOUT
0603
C14
330u/25m
7343
R2 10R
PGND2
VSSA2
VDDP2
VCCA2
REFIN
C2
TON2
ILIM2
PGD2
FB2
BST2
DH2
L1
DL2
0402
LX2
R14 470k
2n2/50V
2u4
VCCA2
17
15
20
21
19
18
16
13
12
8
10
9
11
14
0402
0402
PWR_SRC
C1
PGD2
REFOUT
VCCA2
5VRUN
5VSUS
C9
1u
0603
C22
1u
0603
Figure 5: VDDQ Side Detail
8
7
6
5
8
7
6
5
IRF7811AV
FDS6676S
TON2
Figure 6: VTT Side Detail
D2
SOD
323
C23
1n
0402
D
D
D
D
D
D
D
D
0.9V
VSSA2
G
G
S
S
S
S
S
S
Q2
Q3
R4
649k
0402
R11 10R
0402
R6 4k32
1
2
3
4
1
2
3
4
C11 0u1
18
1.8V
FDS6982S
0402
C18
1u
0603
0603
Q1
VSSA1
4
3
8
2
C10 0u1
C17
27p
0402
C19
0u1
0402
R5 13k3
0603
0402
45k3
0402
17k4
0402
5
R3
1M
0402
R10
R13
R12
10k0
0402
VCCA1
6
1
R9 10k0
TON1
PWR_SRC
7
D1
SOD
323
C20
1n
0402
0402
R1 10R
1.8V
0402
C7
2n2/50V
0402
C8
1u
0603
PGD1
VCCA1
VCCA1
C21
1u
0603
L2
5VSUS
3u9
220u/25m
7343
0402
C15
C6
0u1/25V
0603
R8
0R
27
22
24
26
23
25
28
3
1
6
7
5
4
2
+
U1
VDDP1
PGND1
DH1
BST1
LX1
ILIM1
DL1
PGD1
EN/PSV1
VOUT1
FB1
TON1
VCCA1
VSSA1
C5
10u/25V
1210
SC1486A
C16
0u1
0402
0.9V, 1.5A
www.semtech.com
SC1486A
REFOUT
PGND2
VSSA2
VDDP2
VCCA2
REFIN
TON2
ILIM2
FB2
BST2
PGD2
DH2
DL2
LX2
17
15
20
21
19
18
16
13
12
8
10
9
11
14