4

Date: 7/1

9/06 Rev D

SP6682 High Efficiency Charge Pump Regulator for White LEDs

© 2006 Sipex Corporation

0

1

2

3

4

5

6

2.7

3

3.3

3.6

3.9

4.2

Input Voltage (V)

4 LED's @ 30mA

4 LED's @ 15mA

PERFORMANCE CHARACTERISTICS: Continued

0

1

2

3

0

20

40

60

80

100

Duty Cycle,%

100 Hz

500 Hz

Figure 7. Brightness vs. input voltage

Figure 8. Brightness vs. duty cycle

Figure 9. I

0

50

100

150

200

250

3.0

3.2

3.4

3.6

3.8

4.0

4.2