FAN5608_06 Datasheet, PDF (10/13 Pages) Fairchild Semiconductor – Serial / Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter

FAN5608 Efficiency Curves
2.7V to 5.5V ^{L = 6.9µH}
DAC Input for CH1
DAC Input for CH2
INDB
INDA
V_IN
V_OUT
A1
GND
FAN5608DHMPX
A2
CH2
B1
CH1
B2
NC
4.7µF
V_OUT
Figure 16. FAN5608 with four LEDs
Figure 17. FAN5608 efficiency with four LEDs
2.7V to 5.5V ^{L = 6.8µH}
DAC Input for CH1
DAC Input for CH2
INDB
INDA
V_IN
V_OUT
A1
GND
FAN5608DHMPX
A2
CH2
B1
CH1
B2
NC
4.7µF
V_OUT
Figure 18. FAN5608 with six LEDs
Figure 19. FAN5608 efficiency with six LEDs
2.7V to 5.5V ^{L = 4.7µH}
DAC Input for CH1
DAC Input for CH2
INDB
INDA
V_IN
V_OUT
A1
GND
FAN5608DHMPX
A2
CH2
B1
CH1
B2
NC
4.7µF
V_OUT
Figure 20. FAN5608 with eight LEDs
Figure 21. FAN5608 efficiency with eight LEDs
© 2006 Fairchild Semiconductor Corporation
FAN5608 Rev. 1.0.5 • 8/8/06
10
www.fairchildsemi.com