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SC4521EVB Datasheet(PDF) 11 Page - Semtech Corporation

Part # SC4521EVB
Description  3A Step-Down Switching Regulator with Programmable Soft Start
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4521EVB Datasheet(HTML) 11 Page - Semtech Corporation

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11
 2007 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC4521
Application Information (Cont.)
Design Example 1: 5V to 1V at 2A
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SC4521
IN
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EN
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COMP
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2.49k
R3
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C5
560p
VI = 5V
Vo=1V @2A
C3
10u
D1
R0
0
R2
10k
Css
100n
C1
0.22u
SC4521
IN
2
SW
3
EN
5
FB
6
COMP
7
SS
8
R1
2.49k
R3
20k
C4
18n
Co
470u
D2
L1
3.9uH
C5
560p
VI = 5V
Vo=1V @2A
C3
10u
D1
R0
0
R2
10k
Css
100n
Note: The bottom pad needs a big copper area to remove the heat.


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