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RT9284APB Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9284APB
Description  Maximum Output Voltage up to 20V, Dimming with Zero-inrush and Wide Frequency Range of 100 to 100kHz
PDF  14 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9284APB Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9284A/B
www.richtek.com
DS9284A/B-07 April 2011
Typical Application Circuit
Figure 1. Application for Driving 3 Series WLEDs
Figure 2. Application for Driving 4 Series WLEDs
Figure 4. Application for Constant Output Voltage
VDD
GND
LX
FB
OVP
RT9284
V
IN
EN
6
4
2
3
5
1
I
LED
+
Dimming
Control
2.7V to 5.5V
C1
1uF
C2
1uF/16V
R1
D1
SS0520
L1
4.7uH to 22uH
100Hz-100kHz
OVP
15V
Figure 3. Application for Driving 5 Series WLEDs
VDD
GND
LX
FB
OVP
RT9284A
V
IN
EN
6
4
2
3
5
1
+
2.7V to 5.5V
C1
1uF
C2
R2
D1
SS0520
L1
4.7uH to 22uH
R1
130k
15k
V
OUT
12V
OVP
15V
1uF/16V
V
FB = 1.235V
VDD
GND
LX
FB
OVP
RT9284
V
IN
EN
6
4
2
3
5
1
I
LED
+
Dimming
Control
2.7V to 5.5V
C1
1uF
C2
R1
D1
SS0520
L1
4.7uH to 22uH
100Hz-100kHz
1uF/25V
OVP
18V
OVP 15V
R2
600k
VDD
GND
LX
FB
OVP
RT9284B
V
IN
EN
6
4
2
3
5
1
I
LED
+
Dimming
Control
2.7V to 5.5V
C1
1uF
C2
1uF/25V
R1
D1
SS0520
L1
4.7uH to 22uH
100Hz-100kHz
OVP
20V
V
FB
= 0.25V



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