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RT9269 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9269
Description  Tiny Package, High Efficiency, Constant Current LED Driver
PDF  9 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9269 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9269
2
DS9269-10
March 2007
www.richtek.com
Typical Application Circuit
Figure 1. RT9269 drives single or parallel LED's in charge pump configuration
Figure 2. RT9269 drives 2 series connected LED's in charge pump configuration
Figure 3. RT9269 drives 2~4 series connected LED's in boost rectifier configuration
Note: NICHIANSCW100 is used for RT9269 LED parts.
VDD
GND
RT9269
EXT
FB
EN
C2
1uF
C1
1uF
R1
R2
15
15
C3
1uF
D1
D2
To VDD
or
Duty Control
Brightness
V
IN
0.25V
VDD
GND
RT9269
EXT
FB
EN
C2
1uF
C1
1uF
R1
15
C3
1uF
D1
D2
To VDD
or
Duty Control
Brightness
V
IN
0.25V
VDD
GND
RT9269
LX
FB
EN
C2
10uF
C1
1uF
R2
15
C3
10uF
To VDD
or
Duty Control
Brightness
L1
10uH to 100uH
R1
1K
Q1
0.25V
V
IN



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