Typical performance characteristics, Al8807 – Diodes AL8807 User Manual
Page 4
AL8807
Document number: DS35281 Rev. 5 - 2
4 of 20
March 2013
© Diodes Incorporated
AL8807
Typical Performance Characteristics
400
350
100
0
I (
µ
A
)
IN
300
50
V
= 0V
V
= V
T = 25°C
CTRL
SET
IN
A
250
150
200
0
3
6
9
15 18 21 24 27 30 33
V (V)
Figure 1. Supply Current (not switching) vs.
Input Voltage
IN
12
36
900
800
200
0
F
R
E
Q
U
E
N
C
Y
(k
H
z)
700
100
600
300
400
0
1
2
3
4
V
Figure 2. Switching Frequency vs. V
CTRL
CTRL
5
500
V = 12V
1 LED
R
= 150m
T = 25°C
IN
SET
A
L = 33µH
L = 68µH
L = 100µH
100
90
70
60
40
30
20
0
LE
D
C
U
R
R
E
N
T
(A
)
0.0 0.5 1.0 1.5 2.0
3.0 3.5 4.0 4.5 5.0 5.5
CTRL PIN VOLTAGE (V)
Figure 3. LED Current vs. V
CTRL
2.5
0.0 0.5 1.0 1.5
2.5 3.0 3.5 4.0 4.5 5.0
V
(V)
Figure 4. I
vs. V
CTRL
CTRL
CTRL
2.0
5.0
80
60
-40
-60
I (
µ
A
)
CT
RL
40
-20
0
20
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
-40
-15
10
35
60
85
110
AMBIENT TEMPERATURE (°C)
Figure 6. V
VS. TEMPERATURE
CTRL
2.52
2.51
2.50
2.49
2.48
V (
V
)
CT
RL
V
= Open
V
= V
= 12V
CTRL
SET
IN