AL8807AMP-13(2012) Ver la hoja de datos (PDF) - Diodes Incorporated.
Número de pieza
componentes Descripción
Fabricante
AL8807AMP-13
(Rev.:2012)
(Rev.:2012)
Diodes Incorporated.
AL8807AMP-13 Datasheet PDF : 20 Pages
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Typical Performance Characteristics (cont.) (@TA = +25°C, unless otherwise specified.)
10ns/div
2V/div
TA =25ºC
AL8807A
10ns/div
2V/div
TA =25ºC
Figure 7 SW Output Rise Time
Figure 8 SW Output Fall Time
22%
20%
18%
16%
VIN = 12V
2 LEDs
L = 68µH
TA = 25°C
RS = 100mΩ
LED Current
1.10
1.00
0.90
0.80
14%
0.70
12%
RS = 150mΩ
0.60
10%
0.50
8%
0.40
6%
0.30
4%
0.20
2%
RS = 150mΩ
LED Current Error 0.10
0%
0.00
-2%
RS = 100mΩ
-0.10
0
1
2
3
4
5
CTRL VOLTAGE (V)
Figure 9 LED Current (Different Sense Resistor) vs. VCTRL
0.25
0.20
VIN = 12V
2 LEDs
RS = 100mΩ
TA = 25°C
1.2
VIN = 12V
2 LEDs
1.0 RS = 100mΩ
TA = 25°C
0.8
0.6
L = 33µH
0.4
0.2
L = 68 ~ 220µH
0.0
0
1
2
3
4
5
CTRL VOLTAGE (V)
Figure 10 LED Current (Different Inductor) vs. VCTRL
1200
1000
L = 33µH
VIN = 12V
2 LEDs
RS = 100mΩ
TA = +25°C
0.15
800
L = 68µH
600
0.10
400
L = 33µH
0.05
200
0.00
0
L = 68 ~ 220µH
0.1
0.2
0.3
0.4
0.5
CTRL PIN VOLTAGE (V)
Figure 11 LED Current (Zoomed In) vs. VCTRL
L = 220µH
L = 100µH
0
0
1
2
3
4
5
CTRL VOLTAGE (V)
Figure 12 Switching Frequency vs. VCTRL
AL8807A
Document number: DS35990 Rev. 1 - 2
6 of 20
www.diodes.com
September 2012
© Diodes Incorporated
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