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RT9902 датащи(PDF) 4 Page - Richtek Technology Corporation

номер детали RT9902
подробное описание детали  4 Channel DC/DC Converters IC with High-Efficiency Step-Up and Step-Down
PDF  21 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9902 датащи(HTML) 4 Page - Richtek Technology Corporation

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RT9902
Preliminary
4
DS9902-10 August 2007
www.richtek.com
Figure 3. Typical Application Circuit from 2-AA Battery Supply
2-AA Battery 2.0V to 3.4V
μC standby
3.3V/1mA
1.5V/300mA
VDD3
ENM
CX
FB3
CPFB
EN1
LX3
COMP1
SS
EN3
EN2
COMP2
COMP3
LX2
VDD2
FB1
VDD1
LX1
FB2
4.7
μH
14
20k
30k
4.7nF
1nF
1nF
4.7
μH
2.5V/300mA
2
3
32
1
30
15
13
5
64
23
24
21
22
28
27
29
25
26
20
12
11
17
18
19
9
RT9902
VDDC
10nF
1nF
47k
15k
10
μF
16
I/O 3.3V/500mA
3.3V
10
μF x 2
470k
150k
470k
100pF
220k
30k
1nF
100pF
200k
220k
4.7μH
VBAT
VBAT
10
μF x 4
10
μF x 4
10
μF x 4
10
μF x 2
10
μF x 2
VBAT
SS0520
SS0520
SS0520
100pF
10
μF
Chip Enable
LFB
LDO_O 8
10
10
μF x 2
10
μF
470k
150k
SI2301
VIN
VOUT
100pF
C1 to C2
C3 to C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C19
C20 to C23
C24
C25
C26 to C27
C28 to C29
C30
C31 to C34
R1
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
L1
L2
L3
D1
D2
D3
Q1
R2
C17 to C18
1
μF
C16
7, 31
Exposed Pad (33)



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