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RT9284APJ5 датащи(PDF) 7 Page - Richtek Technology Corporation

номер детали RT9284APJ5
подробное описание детали  Tiny Package, High Performance, Constant Current Switching Regulator for White LED
PDF  14 Pages
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производитель  RICHTEK [Richtek Technology Corporation]
домашняя страница  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9284APJ5 датащи(HTML) 7 Page - Richtek Technology Corporation

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7
RT9284A/B
DS9284A/B-05 August 2007
www.richtek.com
Dimming Operation
Time (400
μs/Div)
IIN
ILED
EN
(5V/Div)
(10mA/Div)
f = 1kHz, Duty = 50%
4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10
μH
(100mA/Div)
Switching Frequency vs. Temperature
1
1.05
1.1
1.15
1.2
1.25
1.3
1.35
1.4
1.45
1.5
-40 -30 -20 -10
0
1020 304050 6070 8090
Temperature (
°C)
Switching Current vs. Input Voltage
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
3
3.25 3.5 3.75
4
4.25 4.5 4.75
5
5.25 5.5
Input Voltage (V)
-45
°C
25
°C
85
°C
Dimming Operation
Time (2ms/Div)
IIN
ILED
EN
(5V/Div)
(10mA/Div)
f = 100Hz, Duty = 50%
4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10
μH
(50mA/Div)
Dimming Operation
Time (40
μs/Div)
IIN
ILED
EN
(5V/Div)
(10mA/Div)
f = 10kHz, Duty = 50%
4WLEDs, VIN = 3.7V, ILED = 20mA, L = 10
μH
(100mA/Div)
Feedback Voltage vs. Temperature
250.6
250.8
251
251.2
251.4
251.6
251.8
252
252.2
-40 -30 -20 -10
0
10203040 506070 8090
Temperature (
°C)



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