RT7257G Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT7257G Datasheet PDF : 15 Pages
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RT7257G
Typical Application Circuit
VIN
4.5V to 18V
CSS
0.1µF
CIN
10µF x 2
2 VIN
BOOT 1
RT7257G
SW 3
CBOOT L
0.1µF 3.6µH
REN 100k 7 EN
R1
75k
8 SS
FB 5
4, 9 (Exposed Pad)
GND
COMP 6
CC
3.3nF
RC
15k
R2
24k
VOUT
3.3V
COUT
22µF x 2
CP
Open
Table 1. Suggested Component Selection
VOUT (V) R1 (kΩ)
8
27
5
62
3.3
75
2.5
25.5
1.8
15
1.2
12
1
3
R2 (kΩ)
3
11.8
24
12
12
24
12
RC (kΩ)
35
20
15
10
7
5
4
CC (nF)
3.3
3.3
3.3
3.3
3.3
3.3
3.3
L (μH)
10
6.8
3.6
3.3
2.2
1.5
1.5
COUT (μF)
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.
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is a registered trademark of Richtek Technology Corporation.
DS7257G-01 September 2012
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