4

Date: 5/5/04

SP6682 High Efficiency Charge Pump Regulator for White LEDs

© Copyright 2004 Sipex Corporation

PERFORMANCE CHARACTERISTICS

EN/PWM

V

OUT

5V/DIV

1V/DIV

V

IN

V

OUT

50mV/DIV

50mV/DIV

0

10

20

30

40

50

60

70

80

90

2.7

3

3.3

3.6

3.9

4.2

Input Voltage(V)

0.26

0.27

0.28

0.29

0.3

0.31

0.32

0.33

0.34

2.7

3

3.3

3.6

3.9

4.2

V

V

OUT

50mV/DIV

50mV/DIV

V

IN

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

2.7

3

3.3

3.6

3.9

4.2

V

Figure 1. Output voltage turn-on time

Figure 2. Power efficiency vs. input voltage

Figure 3. X2 mode voltage ripple when V

Figure 4. Feedback pin voltage vs. input voltage

Figure 5. X1.5 mode voltage ripple when V

Figure 6. Quiescent current vs. input voltage