FAN5608 Fairchild Semiconductor, FAN5608 Datasheet - Page 10

• Manufacturer Part Number: FAN5608
• Description: Serial/Parallel LED Driver with Current-Regulated/ Step-Up DC/DC Converter
• Manufacturer: Fairchild Semiconductor

PRODUCT SPECIFICATION
Application Examples
1. Driver For Four White LEDs
2. Driver For Six White LEDs
3. Driver For Eight White LEDs
10
DAC Input For CH1
DAC Input For CH2
DAC Input For CH1
DAC Input For CH2
DAC Input For CH1
DAC Input For CH2
2.7V to 5V
2.7V to 5V
2.7V to 5V
L = 6.8µH
L =4.7µH
L = 6.8µH
IND
V
A1
B1
A2
B2
B2
B2
IND
V
A1
B1
A2
IND
V
A1
B1
A2
IN
IN
IN
V
GND
V
GND
CH2
CH1
CH2
CH1
IND
IND
OUT
OUT
V
GND
NC
NC
NN
CH2
CH1
NN
IND
OUT
NC
NN
4.7µF
4.7µF
4.7µF
V
OUT
V
OUT
Figure 1
V
Figure 2
Figure 3
OUT
0.85
0.80
0.75
0.70
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.90
0.85
0.80
0.75
0.70
0.65
0.60
2.5
2.5
2.5
3.0
Efficiency vs Input Voltage
Efficiency vs Input Voltage
3.0
3.0
Efficiency vs Input Voltage
Efficiency vs Input Voltage
3.5
Input Voltage (V)
Input Voltage (V)
3.5
Four LEDs
3.5
Input Voltage (V)
Input Voltage (V)
Eight LEDs
Six LEDs
4.0
I LED = 20mA
I LED = 10mA
4.0
I LED = 10mA
4.0
I LED = 10mA
I LED = 20mA
I LED = 20mA
4.5
REV. 1.0.3 6/28/04
4.5
4.5
5.0
5.0
5.0
FAN5608
5.5
5.5
5.5