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Número de pieza
componentes Descripción
FR9886 Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
FR9886
23V, 2.5A, 340Khz Synchronous Step-Down DC/DC Converter
Unspecified
FR9886 Datasheet PDF : 14 Pages
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fitipower integrated technology lnc.
Typical Application Circuit
VIN
4.5V to 23V
R3
10k
Ω
~100k
Ω
C4
10nF~0.1uF
C1
10uF/25V
CERAMIC x 2
7
1
SHDN BOOST
2
VIN
LX
3
FR9886
6
NC
FB
5
L1
4.7uH~15uH
R1
26.1k
Ω
GND
4
SS
8
C3
10nF ~ 0.1uF
R2
10k
Ω
FR9886
85T
C6
(optional)
VOUT
3.3V
C2
22uF/6.3V
CERAMIC x 2
Figure 2. C
IN
/C
OUT
use Ceramic Capacitors Application Circuit
VIN
4.5V to 23V
R3
10k
Ω
~100k
Ω
C4
10nF~0.1uF
C1
100uF/25V
EC x 1
C5
0.1uF/25V
CERAMIC x 1
7
1
SHDN BOOST
2
VIN
LX
3
FR9886
6
NC
FB
5
L1
4.7uH~15uH
R1
26.1k
Ω
GND
4
SS
8
C3
10nF ~ 0.1uF
R2
10k
Ω
C6
(optional)
VOUT
3.3V
C2
100uF/6.3V
EC x 1
Figure 3. C
IN
/C
OUT
use Electrolytic Capacitors Application Circuit
V
OUT
1.2V
1.8V
2.5V
3.3V
5V
1.2V
1.8V
2.5V
3.3V
5V
FR9886- 1.0-APR-2011
R1
3k
Ω
9.53k
Ω
16.9k
Ω
26.1k
Ω
44.2k
Ω
3k
Ω
9.53k
Ω
16.9k
Ω
26.1k
Ω
44.2k
Ω
R2
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
10k
Ω
C6
200pF~1nF
200pF~1nF
200pF~1nF
200pF~1nF
200pF~1nF
--
--
--
--
--
L1
4.7uH
4.7uH
10uH
10uH
10uH
4.7uH
4.7 H
10uH
10uH
10uH
Table 1. Recommended Component Values
C
OUT
22uF MLCC x2
22uF MLCC x2
22uF MLCC x2
22uF MLCC x2
22uF MLCC x2
100uF EC x1
100uF EC x1
100uF EC x1
100uF EC x1
100uF EC x1
2
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