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RT9907 Scheda tecnica(PDF) 2 Page - Richtek Technology Corporation

Il numero della parte RT9907
Spiegazioni elettronici  3 Channel DC/DC Converters IC with High-Efficiency Step-Up and Step-Down
PDF  19 Pages
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Produttore elettronici  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9907 Scheda tecnica(HTML) 2 Page - Richtek Technology Corporation

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RT9907
Preliminary
2
DS9907-07 August 2007
www.richtek.com
Typical Application Circuit
Figure 1. Typical Application Circuit for 1-cell Li+ Battery
1-cell Li+ Battery 3.4V to 4.2V
VDD3
ENM
FB3
EN1
LX3
COMP1
SS
EN3
EN2
COMP2
COMP3
LX2
VDD2
FB1
VDD1
LX1
FB2
4.7
μH
20k
10k
4.7nF
1nF
1nF
4.7
μH
3.3V/500mA
2
3
24
1
22
5
64
16
15
20
19
21
17
18
14
10
9
12
13
8
RT9907
11
7, 23,
Exposed Pad (25)
680k
470k
100pF
150k
10
μF x 4
VBAT
10
μF
5V/500mA
30k
1nF
100pF
200k
220k
4.7μH
1.5V/500mA
VBAT
VBAT
10
μF x 4
10
μF x 4
10
μF
0.1
μF
10
μF x 2
10
μF x 2
SS0520
130k
Chip Enable
1
μF



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