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SC4525DEVB Folha de dados(PDF) 18 Page - Semtech Corporation

Nome de Peças SC4525DEVB
Descrição Electrónicos  18V, 3A, 350kHz Step-Down Switching Regulator
PDF  21 Pages
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Fabricante Electrônico  SEMTECH [Semtech Corporation]
Página de início  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4525DEVB Folha de dados(HTML) 18 Page - Semtech Corporation

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© 2011 Semtech Corp.
www.semtech.com
SC4525D
18
Typical Performance Characteristics
(For A 12V to 5V/3A Step-down Converter with 350kHz Switching Frequency)
Fig.12a: LC
Load Characteristic
0
1
2
3
4
5
6
0
0.5
1
1.5
2
2.5
3
3.5
4
Load Current (A)
SS270 REV 6-7
Figure 12(a). Load Characteristic
Fig.12b: SS
12V Input (5V/DIV)
5V Output (2V/DIV)
5ms/DIV
SS Voltage (1V/DIV)
Figure 12(b). V
IN Start up Transient (IO=3A)
Figure 12(c). Load Transient Response
(I
O= 0.3A to 3A)
Figure 12(d). Output Short Circuit (Hiccup)
Fig.12c: TR
5V Output Response (1V/DIV, AC Coupling)
Inductor Current (1A/DIV)
40us/DIV
Fig.12d: OCP
5V Output Short (5V/DIV)
Retry Inductor Current (2A/DIV)
10ms/DIV
SS Voltage (2V/DIV)



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