AL8807AW5-7 datasheet(7/20 Pages) DIODES

Part #	AL8807AW5-7

Description	HIGH EFFICIENCY LOW EMI WIDE ANALOG DIMMING RANGE 36V 1A/1.3A BUCK LED DRIVER

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Manufacturer	DIODES [Diodes Incorporated]

Direct Link	http://www.diodes.com

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7 / 20 page

AL8807A

Document number: DS35990 Rev. 1 - 2

7 of 20

www.diodes.com

September 2012

AL8807A

Typical Performance Characteristics (cont.) (@TA = +25°C, unless otherwise specified.)

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

6

9

12

15

18

21

24

27

30

33

36

INPUT VOLTAGE (V)

Figure 13 Duty Cycle vs. Input Voltage

R = 150m

L = 33µH

T = 25°C

2 LEDs

CTRL Open

S

A

Ω

6

9

12

15

18

21

24

27

30

36

INPUT VOLTAGE (V)

Figure 14 Efficiency vs. Input Voltage

100

70

75

80

85

90

95

L= 68µH

R = 300m

CTRL Floating

T = +25°C

S

A

Ω

1LED

2 LEDs

3 LEDs

4 LEDs

5 LEDs

6 LEDs 7 LEDs 8 LEDs

0

100

200

300

400

500

600

700

800

6

9

12

15

18

21

24

27

30

33

36

INPUT VOLTAGE (V)

Figure 15 Switching Frequency vs. Input Voltage

2 LEDs

3 LEDs 4 LEDs

5 LEDs 6 LEDs

7 LEDs

8 LEDs

R = 300m

L = 68µH

T = 25°C

CTRL Open

S

A

Ω

1 LED

0.3

0.31

0.32

0.33

0.34

0.35

0.36

6

9

12

15

18

21

24

27

30

33

36

INPUT VOLTAGE (V)

Figure 16 330mA LED Current vs. Input Voltage

0.60

0.62

0.64

0.66

0.68

0.70

0.72

0.74

6

9

12

15

18

21

24

27

30

33

36

INPUT VOLTAGE (V)

Figure 17 670mA LED Current vs. Input Voltage

1 LED

2 LEDs

3 LEDs 4 LEDs

5 LEDs

6 LEDs

7 LEDs

8 LEDs

R = 150m

L = 68µH

T = 25°C

CTRL Open

S

A

Ω

0.90

0.95

1.00

1.05

1.10

6

9

12

15

18

21

24

27

30

33

36

INPUT VOLTAGE (V)

Figure 18 1A LED Current vs. Input Voltage

1 LED

2 LEDs

3 LEDs

4 LEDs

5 LEDs

6 LEDs

7 LEDs

8 LEDs

R = 100m

L = 68µH

T = 25°C

V

= Open

S

A

CTRL

Ω

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