Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 13

Copyright

© 2000

Rev. 1.1b, 2005-03-03

LX1741

High Efficiency High Voltage Boost Controller

I N T E GRA T ED

PR ODUC T S

CHARACT ER I S TI C CURVES

50%

60%

70%

80%

90%

100%

1

2

3

4

5

6

7

8

9

10

111213141516

171819 20

Output Current

Figure 15 –

Efficiency vs. Output Current (mA)

50%

60%

70%

80%

90%

100%

1

2

3

4

5

6

7

8

9

10

111213141516171819 20

Output Current

Figure 16 –

Efficiency vs. Output Current (mA)

50%

60%

70%

80%

90%

100%

1

2

3

4

5

6

7

8

9

10 11

12

13 14

15 16

17

18 19 20

Output Current

Figure 17 –

Efficiency vs. Output Current (mA)

0

1

2

3

4

5

6

0

20

40

60

80

100

120

Drive Current (mA)

Figure 18

– Gate Drive Voltage vs. Drive Current (mA)