AP8802H
60V 1A LED STEP-DOWN CONVERTER
Typical Characteristics (T A = +25°C, V IN = 60V, L = 68μH; unless otherwise stated.)
10
100
8
95
6
4
2
0
-2
-4
-6
-8
90
85
80
75
70
-10
6
12
18
24
30
36
42
48
54
60
65
6
12
18
24
30
36
42
48
54
60
500
450
400
350
300
250
200
150
100
50
0
INPUT VOLTAGE (V)
Figure. 8 LED Current vs. Input Voltage
100
90
80
70
60
50
40
30
20
10
0
INPUT VOLTAGE (V)
Figure. 9 Efficiency vs. Input Voltage
6
12
18
24
30
36
42
48
54
60
6
12
18
24
30
36
42
48
54
60
INPUT VOLTAGE (V)
Figure. 10 Switching Frequency vs. Input Voltage
Figure. 12 Steady State Waveforms
SUPPLY VOLTAGE (V)
Figure. 11 Duty Cycle vs. Input Voltage
Figure. 13 Start-Up Showing LED Current Soft Start
AP8802H
Document number: DS32227 Rev. 6 - 2
5 of 14
www.diodes.com
May 2012
? Diodes Incorporated
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