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AL8807 Datasheet(PDF) 4 Page - Diodes Incorporated

Part # AL8807
Description  HIGH EFFICIENCY LOW EMI 36V 1A BUCK LED DRIVER
PDF  21 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AL8807 Datasheet(HTML) 4 Page - Diodes Incorporated

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AL8807
HIGH EFFICIENCY LOW EMI 36V 1A BUCK LED DRIVER
AL8807
Document number: DS35281 Rev. 4 - 2
4 of 21
www.diodes.com
June 2012
© Diodes Incorporated
Typical Performance Characteristics (TA = 25°C unless otherwise stated)
400
350
100
0
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
700
100
600
300
400
01
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
Ω
L = 33µH
L = 68µH
L = 100µH
100
90
70
60
40
30
20
0
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
40
-20
0
20
V
= V
= 12V
T = 25°C
SET
IN
A
3
2.5
2
1.5
0.5
0
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
= Open
V
= V
= 12V
CTRL
SET
IN



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