Copyright

© ANPEC Electronics Corp.

Rev. A.7 - Nov., 2012

APW7207/A

www.anpec.com.tw

4

Typical Operating Characteristics

Efficiency vs. WLED Current

WLED Current vs. PWM Duty Cycle

WLED Current vs. Supply Voltage

Maximum Duty Cycle vs. Supply

Voltage

Switch ON Resistance vs. Supply

Voltage

Switching Frequency vs. Supply

Voltage

(Refer to figure 1 in the section “Typical Application Circuits”, V

Supply Voltage, V

19.0

19.2

19.4

19.6

19.8

20.0

20.2

20.4

20.6

20.8

21.0

2.5

3

3.5

4

4.5

5

5.5

6

Supply Voltage, V

40

50

60

70

80

90

100

2.5

3

3.5

4

4.5

5

5.5

6

Supply Voltage, V

2.5

3

3.5

4

4.5

5

5.5

6

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

Supply Voltage, V

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

2.5

3

3.5

4

4.5

5

5.5

6

WLED Current, I

50

55

60

65

70

75

80

85

90

95

0

5

10

15

20

25

30

V

V

V

V

10 WLEDs

33V@20mA

≅

PWM Duty Cycle (%)

0

20

40

60

80

100

0

2

4

6

8

10

12

14

16

18

20

100Hz

100kHz

1kHz