AL8805
Typical Performance Characteristics (cont.) (1A LED Current) (@T A = +25°C, unless otherwise specified.)
10%
8%
250
6%
3 LEDs
5 LEDs
200
4%
2 LEDs
4 LEDs
6 LEDs 7 LEDs
8 LEDs
2%
0%
-2%
-4%
1 LED
150
100
-6%
-8%
L = 100 μ H
R S = 100m Ω
T A = 25 ° C
50
-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 24 LED Current Deviation vs. Input Voltage
10%
INPUT VOLTAGE (V)
Figure 25 Switching Frequency vs. Input Voltage
350
5 LEDs
6 LEDs 7 LEDs
8%
6%
4%
3 LEDs
2 LEDs 4 LEDs
8 LEDs
300
250
L = 68 μ H
R S = 100m Ω
T A = 25 ° C
2%
0%
-2%
1 LED
200
150
-4%
100
1 LED
2 LEDs 3 LEDs
-6%
-8%
6
L =68 μ H
R S = 100m Ω
T A = 25 ° C
9 12 15 18 21 24 27 30 33 36
50
0
6
9 12 15 18 21 24 27 30 33 36
8 LEDs
6 LEDs 7 LEDs
4 LEDs
5 LEDs
INPUT VOLTAGE (V)
Figure 26 LED Current Deviation vs. Input Voltage
INPUT VOLTAGE (V)
Figure 27 Switching Frequency vs. Input Voltage
10%
2 LEDs
4 LEDs
700
8%
6%
3 LEDs
6 LEDs
5 LEDs
600
4%
8 LEDs
500
2%
0%
-2%
-4%
1 LED
400
300
200
-6%
-8%
L = 33 μ H
R S = 100m Ω
T A = 25 ° C
100
-10%
6 9 12 15 18 21 24 27 30 33 36
INPUT VOLTAGE (V)
Figure 28 LED Current Deviation vs. Input Voltage
0
6 9 12 15 18 21 24 27 30 33 36
INPUT VOLTAGE (V)
Figure 29 Switching Frequency vs. Input Voltage
AL8805
Document number: DS35030 Rev. 4 - 2
8 of 16
www.diodes.com
July 2012
? Diodes Incorporated
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