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SC4521 数据表(PDF) 13 Page - Semtech Corporation

部件名 SC4521
功能描述  3A Step-Down Switching Regulator with Programmable Soft Start
PDF  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  SEMTECH [Semtech Corporation]
网页  http://www.semtech.com
标志 SEMTECH - Semtech Corporation

SC4521 数据表(HTML) 13 Page - Semtech Corporation

Back Button SC4521 Datasheet HTML 9Page - Semtech Corporation SC4521 Datasheet HTML 10Page - Semtech Corporation SC4521 Datasheet HTML 11Page - Semtech Corporation SC4521 Datasheet HTML 12Page - Semtech Corporation SC4521 Datasheet HTML 13Page - Semtech Corporation SC4521 Datasheet HTML 14Page - Semtech Corporation SC4521 Datasheet HTML 15Page - Semtech Corporation SC4521 Datasheet HTML 16Page - Semtech Corporation SC4521 Datasheet HTML 17Page - Semtech Corporation Next Button
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13
 2007 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC4521
Application Information (Cont.)
Design Example 3: 13V ~ 21V to 3.3V at 1A
C1
0.22u
SC4521
IN
2
SW
3
EN
5
FB
6
COMP
7
SS
8
R1
24.9k
R3
3.83k
C4
18n
C2
10u
D2
L1
10uH
C5
560p
VI
Vo=3.3V
C3
4.7u
R2
8.25k
D3
R0
0
Css
330n
Rss
200k
C1
0.22u
SC4521
IN
2
SW
3
EN
5
FB
6
COMP
7
SS
8
R1
24.9k
R3
3.83k
C4
18n
C2
10u
D2
L1
10uH
C5
560p
VI
Vo=3.3V
C3
4.7u
R2
8.25k
D3
R0
0
Css
330n
Rss
200k
Note: The bottom pad needs a big copper area to remove the heat.
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