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Número de pieza
componentes Descripción
RT7237ANGSP Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT7237ANGSP
2A, 18V, 340kHz Synchronous Step-Down Converter
Richtek Technology
RT7237ANGSP Datasheet PDF : 15 Pages
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RT7237A
Typical Application Circuit
V
IN
4.5V to 18V
Chip Enable
C
IN
10µF x 2
2
VIN
BOOT
1
RT7237A
SW
3
7
EN
C
BOOT
L
0.1µF
10µH
R1
75k
8
SS
FB
5
C
SS
0.1µF
4, 9 (Exposed Pad)
GND
COMP
6
C
C
3.3nF
R
C
13k
R2
24k
V
OUT
3.3V
C
OUT
22µF x 2
C
P
Open
Table 1. Suggested Components Selection
V
OUT
(V) R1 (k
Ω
)
8
27
5
62
R2 (k
Ω
)
3
11.8
R
C
(k
Ω
)
27
20
C
C
(nF)
3.3
3.3
L (
μ
H)
22
15
3.3
75
24
13
3.3
10
2.5
25.5
12
9.1
3.3
6.8
1.5
10.5
12
4.7
3.3
3.6
1.2
12
24
3.6
3.3
3.6
1
3
12
3
3.3
3.6
C
OUT
(
μ
F)
22 x 2
22 x 2
22 x 2
22 x 2
22 x 2
22 x 2
22 x 2
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS7237A-01 September 2012
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