Diodes AL8843EV1, Руководство пользователя, Страница: 8 / 10

AL8843EV1 User Guide
AL8843EV1 Page 8 of 10
Dec 2017
www.diodes.com
0 5 10 15 20 25 30 35 40
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
Ef
fi
ci
e
n
cy(%
)
Vin(V)
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
5 10 15 20 25 30 35 40
0
50
100
150
200
250
300
F
re
q
u
e
n
cy(kH
z)
Vin(V)
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 5 10 15 20 25 30 35 40
1500
1600
1700
1800
1900
2000
2100
2200
I L
E
D
(mA)
Vin(V)
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
Functional Data Curves
Efficiency vs. Input Voltage LED Current vs. Input Voltage
Operating Frequency vs. Input Voltage PWM Dimming(Vin=20V, 3LEDs)
Analog Dimming(Vin=20V, 3LEDs)
0 10 20 30 40 50 60 70 80 90 100
0
200
400
600
800
1000
1200
1400
1600
1800
2000
I L
E
D
(mA)
PWM Duty(%)
f
PWM
=100Hz
f
PWM
=500Hz
f
PWM
=1kHz
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
I L
E
D
(mA)
V
CTRL
pin voltage(V)