SC4520 データシートの表示（PDF） - Semtech Corporation
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SC4520 Datasheet PDF : 12 Pages
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POWER MANAGEMENT
Application Information (Cont.)
Design Example: 16V to 5V at 2A
SC4520
VIN =16V
C3
10u
4.75k
R4
Rosc=0
2 IN
SW 3
5 EN SC4520 FB 6
8
FSET
7
COMP
C5
180p
C1
0.22u
D3
L1
8.2uH
R1
52.3k
Vo=5V
C2
10u
C4
3.3n
R2
10k
R3
3.4k
D2
Bill of Materials
Item
Qty
Reference
Value
1
1
C1
0.22uF, 25V, 0805, X7R
2
2
C2, C3
10u, 1210, X5R, 25V
3
1
C4
3.3n, 0805, X7R, 25V
4
1
C5
180pF
5
1
D1
1N4148WS, SOD-323
6
1
D2
SS33
7
1
L1
8.2uH
8
1
R1
52.3K
9
1
R2
10k
10
1
R3
3.4k
11
1
R4
4.75k
12
1
Rosc
0
13
1
U1
SC4520
Unless specified, all resistors have 1% precision with 0603 package.
Resistors are +/-1% and all capacitors are +/-20%
Part No./Manufacturer
Vishay
Panasonic
Vishay
Fairchild P/N: SS33
COOPER P/N:DR125-8R2
Semtech
2006 Semtech Corp.
11
www.semtech.com
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