SC4521EVB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4521EVB' PDF : 18 Pages View PDF
POWER MANAGEMENT
Application Information (Cont.)
Design Example 2: 6.2V to 1.5V at 1.5A
SC4521
VI = 6.2V
R0
0 C3
10u
D1
Css
100n
2 IN
5 EN
8 SS
SW 3
FB 6
COMP 7
SC4521
C5
560p
C1
0.22u
C4
18n
R3
4.87k
L1
4.7uH
R1
8.66k
Vo=1.5V
Co
100u
R2
10k
D2
Note: The bottom pad needs a big copper area to remove the heat.
Bill of Materials
Item
Qty
Reference
Value
1
1
C1
0.22uF, 25V, 0805, X7R
2
1
Co
100uF
3
1
C3
4
1
C4
10uF
18nF, 0805, X7R, 25V
5
1
C5
6
1
D1
7
1
D2
560pF, 50V, 0805
1N4148SW, SOD323
MBRA210LT3
8
1
L1
9
1
R0
10
1
R1
4.7uH
0, 0805
8.66k, 1%, 0805
11
1
R2
12
1
R3
10k, 1%, 0805
4.87k, 0805
13
-
R4
not used, 0805
14
1
Css
100nF
15
1
U1
SC4521
Unless specified, all resistors have 1% precision with 0805 package.
Resistors are +/-1% and all capacitors are +/-20%
Part No./Manufacturer
Vishay: VJ0805Y224KXX
Sanyo
TDK: C3216OJ106MT
Vishay
Vishay
ON
Toko: 919AS-4R7
Vishay
Vishay
Vishay
Vishay
Semtech
2007 Semtech Corp.
12
www.semtech.com
Share Link: 
