Al8805 typical performance characteristics, Al8805 – Diodes AL8805 User Manual
Page 4
AL8805
Document number: DS35030 Rev. 4 - 2
4 of 16
July 2012
© Diodes Incorporated
AL8805
Typical Performance Characteristics
(@T
A
= +25°C, unless otherwise specified.)
0
50
100
150
200
250
300
350
400
V (V)
Figure 1 Supply Current (not switching) vs. Input Voltage
IN
I (
µ
A
)
IN
V
= 0V
V
= V
T = 25°C
CRTL
SET
IN
A
0
6
12
18
24
30
36
0
100
200
300
400
500
600
700
800
900
0
1
2
3
4
5
V
(V)
Figure 2 Switching Frequency vs. V
CTRL
CTRL
F
R
E
Q
U
E
N
C
Y
(k
Hz
)
V = 12V
1 LED
R
= 150m
T = 25°C
IN
SET
A
Ω
L = 33µH
L = 68µH
L = 100µH
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0
1
2
3
4
5
V
(V)
Figure 3 LED Current vs. V
CTRL
CTRL
I (
A
)
LED
V = 12V
1 LED
T = 25°C
IN
A
L = 68µH
R
= 100m
SET
Ω
R
= 150m
SET
Ω
R
= 300m
SET
Ω
-60
-40
-20
0
20
40
60
80
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
V
(V)
Figure 4 I
vs. V
CTRL
CTRL
CTRL
I (
µ
A
)
CT
RL
V
= V = 12V
T = 25°C
SET
IN
A
3
2.5
2
1.5
0.5
0
V (
V
)
CT
RL
1
V
= Open
V
= V
CTRL
SET
IN
T = 25°C
A
0
3
6
9 12
18 21 24 27 30
36
V (V)
Figure 5. V
vs. Input Voltage
(CTRL Pin Open Circuit)
IN
CTRL
15
33
2.48
2.49
2.50
2.51
2.52
-40
-15
10
35
60
85
110
AMBIENT TEMPERATURE (°C)
Figure 6 V
vs. Temperature
CTRL
V (
V
)
CT
RL
V
= Open
V
= V
= 12V
CTRL
SET
IN