AL8805
Typical Performance Characteristics (cont.) (670mA LED Current) (@T A = +25°C, unless otherwise specified.)
5%
350
4%
3%
2%
1%
0%
-1%
-2%
300
250
200
150
100
L = 100 μ H
R S = 150m Ω
T A = 25 ° C
2 LEDs
1 LED
-3%
-4%
50
5 LEDs
7 LEDs
6 LEDs 8 LEDs
3 LEDs 4 LEDs
-5%
6
9
12 15 18 21 24 27 30 33 36
0
6
9
12 15 18 21 24 27 30 33 36
INPUT VOLTAGE (V)
Figure 18 LED Current Deviation vs. Input Voltage
10%
8%
6%
4%
2%
0%
-2%
-4%
-6%
-8%
500
450
400
350
300
250
200
150
100
50
INPUT VOLTAGE (V)
Figure 19 Switching Frequency vs. Input Voltage
-10%
6
9
12 15 18 21 24 27 30 33 36
0
6
9
12 15 18 21 24 27 30 33 36
INPUT VOLTAGE (V)
Figure 20 LED Current Deviation vs. Input Voltage
10%
8%
6%
4%
INPUT VOLTAGE (V)
Figure 21 Switching Frequency vs. Input Voltage
900
800
700
600
2%
500
0%
400
-2%
-4%
-6%
-8%
300
200
100
-10%
6
9
12 15 18
21 24 27 30 33 36
0
6
9
12 15 18 21 24 27 30 33 36
INPUT VOLTAGE (V)
Figure 22 LED Current Deviation vs. Input Voltage
INPUT VOLTAGE (V)
Figure 23 Switching Frequency vs. Input Voltage
AL8805
Document number: DS35030 Rev. 4 - 2
7 of 16
www.diodes.com
July 2012
? Diodes Incorporated
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