AL8807Q
Document number: DS36904 Rev. 1 - 2
4 of 16
www.diodes.com
March 2014
© Diodes Incorporated
A
L8807Q
Typical Performance Characteristics (@T
A
= +25°C, unless otherwise specified.)
0
50
100
150
200
250
300
350
400
0 5 10 15 20 25 30
V (V)
Supply Current (not switching) vs. Inpu t Current
IN
I (µA)
IN
V = 0V
V = V
T = 25C
CTRL
SE T IN
A
°
0
0.5
1
1.5
2
2.5
3
0 5 10 15 20 25 30
CTRL
A
V= Open
T = 25C
SE T IN
V = V
V (V)
V vs. In put Voltage
(CTRL pin o pen circuit)
IN
CTRL
V (V)
CTRL
900
800
200
0
F
R
E
Q
U
E
N
C
Y
(k
H
z)
700
100
600
300
400
01234
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
LED
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 (µA)
CTRL
40
-20
0
20
V = V = 12V
T = 25°C
SET IN
A
-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)
CTRL
V = Open
V = V= 12V
CTRL
SET IN
文档编号:DS36904 Rev. 1 - 2
4 / 16
2014年3月
典型性能特征(@T
A = +25°C，除非另有说明。)
电源电流(不开关)vs.输入电流
V = V t =
25
CTRL
集
vs.输入电压
(CTRL引脚开路)
图2。开关频率vs. V
0.0 0.5 1.0 1.5 2.0 3.0 3.5 4.0 4.5 5.0 5.5
CTRL引脚电压(v)
图3。LED电流vs. V
CTRL
0.0 0.5 1.0 1.5 2.5 3.0 3.5 4.0 4.5 5.0
CTRL
CTRL
环境温度(℃)
CTRL
集
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