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RT9903 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9903
Description  5 Channel DC/DC Converters IC with High-Efficiency Step-Up
PDF  15 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9903 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9903
Preliminary
2
DS9903-07 August 2007
www.richtek.com
Typical Application Circuit
2-AA Battery 1.8V to 3.2V
EN1
EN2
EN3
EN4
COMP1
COMP2
COMP3
COMP4
3.3V_Motor
VBATT
WLED
(12V)
VDD
+12V (+LCD)
+15V (+CCD)
-7.5V (-CCD)
VCC
3.3V
AGND
PGND
RT
FB4
CS4
FB3
LX3
LX1
FB1
LX2
FB2
FB-CP
INCD
CX
VBATT
VBATT
EXT4
10uF
4.7uH
4.7uH
4.7uH
4.7uH
SS0520
SS0520
SS0520
SS0520
SS0520
1nF
300k
130k
10k
Si2302
1uF
10uF
10uF
10uFx4
2.7k
1.2k
2.2k
1.2k
4.7nF
56nF
6.8nF
4.7nF
2.2M
200k
1nF
10uF
1nF
5.1M
360k
10uFx3
10uFx2
SS0520
750k
330k
1uF
68nF
4.7uF
10uF
RT9903
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
10uF
10
Chip Enable
500pF
C1
C2
C3
C4
C5 to C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21 to C23
C24
C25 to C26
C27
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
L1
L2
L3
L4
D1
D2
D3
D4
D5
D6
Q1
R15



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