AL8808WT-7 Diodes Inc., AL8808WT-7 Datasheet - Page 4

• Manufacturer Part Number: AL8808WT-7
• Description: LED Lighting Drivers LED MV Int Switch TS Switch TSOT25 T&R 3K
• Manufacturer: Diodes Inc.

Specifications of AL8808WT-7

• Rohs: yes
• Input Voltage: 6 V to 30 V
• Operating Frequency: 1 MHz
• Maximum Supply Current: 450 uA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TSOT-25
• Minimum Operating Temperature: - 40 C

Typical Performance Characteristics
AL8808
Document number: DS35648 Rev. 2 - 2
6
5
4
3
2
1
0
0
1.2
1.0
0.8
0.6
0.4
0.2
0.0
400
350
300
250
200
150
100
50
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0
0
T = +25°C, V
L = 68µH, R
1 LED, f
A
T = +25°C
V
L = 68µH
1 LED
Figure 6. I
Figure 2. Supply Current vs. Input Voltage
A
IN
20
3
= 12V
PWM
Figure 4. LED Current vs. V
PWM DUTY CYCLE (%)
SET
6
= 500Hz
IN
= 150m
= 12V
40
LED
INPUT VOLTAGE (V)
9
vs. PWM Duty Cycle
Ω
12 15 18 21 24 27 30
V
CTRL
60
(V)
R
SET
80
R
R
SET
SET
CTRL
= 100mΩ
V
V
T = +25°C
CTRL
SET
A
= 150mΩ
= 300mΩ
= V
100
= 0V
IN
0.9
0.6
0.3
0.0
(@ T
www.diodes.com
A
= +25°C, unless otherwise stated.)
4 of 20
-100
-120
900
800
700
600
500
400
300
200
100
100
-20
-40
-60
-80
20
90
80
70
60
50
40
30
20
10
0
0
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
6
T = +25°C, V
L = 68µH, R
1 LED
L = 100µH
T = +25°C, R
L = 33µH, L = 68µH, L = 100µH
A
Figure 3. Switching Frequency vs. V
A
Figure 7. Duty Cycle vs. Input Voltage
9
L = 33µH
INPUT VOLTAGE V
12
SET
Figure 5. I
IN
SET
= 150m
= 12V
= 150m
15
V
V
Ω
CTRL
CTRL
CTRL
Ω
18
(V)
(V)
vs. V
21
CTRL
CTRL
T = +25°C
V
R
1 LED
L = 68µH
24
A
IN
SET
(V)
= 12V
= 150m
27
CTRL
© Diodes Incorporated
Ω
AL8808
30
January 2013