FAN5606 Fairchild Semiconductor, FAN5606 Datasheet - Page 2

• Manufacturer Part Number: FAN5606
• Description: Serial LED Driver with Current-Regulated/ Step-Up DC/DC Converter
• Manufacturer: Fairchild Semiconductor

FAN5606
Pin Assignment
Pin Descriptions
Definition of Terms
Output Current Accuracy: reflects the difference between the measured value of the output current (LED) and
programmed value of this current .
Efficiency: is expressed as a ratio between the electrical power into the LEDs and the total power consumed from the input
power supply.
Although this definition leads to a lower value than the boost converter efficiency, it more accurately reflects better system
performance, from the user’s point-of-view.
2
Pin No.
1
2
3
4
5
6
7
8
Pin Name
V
CAT
GND
IND
NC
V
OUT
A
B
IN
Output Current Accuracy (%)
Pin Function Description
DAC A Input
DAC B Input
LED Cathode
Inductor
Output LED’s Anode
No Connection
Input Voltage
Ground
Efficiency (%)
CAT
IND
8-Lead 3x3mm MLP
A
B
=
(
------------------------------------------------------------------------------------------------------------ -
1
2
3
4
I
FAN5606
OUT
=
(
-------------------------------------------------------- -
measured I
V
LED
I
V
OUT
×
IN
8
7
6
5
I
–
LED
×
NC
GND
V
V
programmed
OUT
I
IN
OUT
IN
) 100
×
programmed
) 100
×
PRODUCT SPECIFICATION
REV. 1.0.2 5/14/04