1.5MHz STEP-UP DC-DC CONVERTER

AP3012

8

May 2010 Rev. 1. 6

BCD Semiconductor Manufacturing Limited

Data Sheet

Figure 9. Switching Current Limit vs. Duty Cycle

Typical Performance Characteristics (Continued)

Figure 10. Feedback Voltage vs. Junction Temperature

Figure 11. Efficiency vs. Output Current

Figure 8. Efficiency vs. Junction Temperature

0

5

10

15

20

25

30

35

40

45

60

65

70

75

80

85

Output Current (mA)

V

IN=3.0V

V

IN=3.6V

V

IN=4.2V

V

IN=5.0V

V

OUT=24V

L=10µH

-50

-25

0

25

50

75

100

1.24

1.25

1.26

1.27

1.28

1.29

V

IN=5V

V

OUT=24V

I

OUT=30mA

Junction Temperature (

oC)

020

40

60

80

100

0

200

400

600

800

1000

1200

Duty Cycle (%)

-50

-25

0

25

50

75

100

50

55

60

65

70

75

80

85

V

IN=5V

V

OUT=24V

I

OUT=30mA

Junction Temperature (

oC)