AL8843
Typical Performance Characteristics (continued) (@TA = +25°C, VIN = 16V, unless otherwise specified.)
LED Current vs. Input Voltage
LED Current vs. Input Voltage
(RSET = 0.1Ω, L = 33μH)
(RSET = 0.15Ω, L = 47μH)
1030
1025
1020
1015
1010
1005
1000
995
700
695
690
685
680
675
670
665
660
655
650
645
640
VO=3.3V
VO=3.3V
VO=6.6V
VO=9.9V
VO=13.2V
VO=16.5V
VO=19.8V
VO=23.1V
VO=26.4V
VO=29.7V
VO=33V
VO=6.6V
VO=9.9V
VO=13.2V
VO=16.5V
VO=19.8V
VO=23.1V
VO=26.4V
VO=29.7V
VO=33V
990
985
980
975
970
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Input Voltage (V)
Input Voltage (V)
LED Current vs. Input Voltage
LED Current vs. Input Voltage
(RSET = 0.067Ω, L = 47μH)
(RSET = 0.05Ω, L = 47μH)
1.56
1.55
1.54
1.53
1.52
1.51
1.50
1.49
1.48
2.10
2.09
2.08
2.07
2.06
2.05
2.04
2.03
2.02
2.01
2.00
1.99
1.98
VO=3.3V
Vo=3.3V
Vo=6.6V
Vo=9.9V
Vo=13.2V
Vo=16.5V
Vo=19.8V
Vo=23.1V
Vo=26.4V
Vo=29.7V
Vo=33V
VO=6.6V
VO=9.9V
VO=13.2V
VO=16.5V
VO=19.8V
VO=23.1V
VO=26.4V
VO=29.7V
VO=33V
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Input Voltage (V)
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Input Voltage (V)
Operating Frequency vs. Input Voltage
Operating Frequency vs. Input Voltage
(RSET = 0.3Ω, L = 100μH)
(RSET = 0.15Ω, L = 47μH)
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
VO=3.3V
VO=6.6V
VO=9.9V
VO=13.2V
VO=16.5V
VO=19.8V
VO=23.1V
VO=26.4V
VO=29.7V
VO=33V
VO=3.3V
VO=6.6V
VO=9.9V
VO=13.2V
VO=16.5V
VO=19.8V
VO=23.1V
VO=26.4V
VO=29.7V
VO=33V
0
0
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Input Voltage (V)
4
6
8
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
Input Voltage (V)
7 of 16
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August 2022
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AL8843
Document number: DS40367 Rev. 2 - 2