FAN5608 Fairchild Semiconductor, FAN5608 Datasheet - Page 9

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

FAN5608
The current feeding the string of LEDs is the sum of the cur-
rents programmed for each branch in digital or analog mode.
Using all four inputs in digital mode, the LED current can be
programmed within the 0 to 40 mA range, according to the
following table :
REV. 1.0.3 6/28/04
Input A1 Input B1 Input A2 Input B2 I
0
1
0
0
0
1
1
0
0
1
0
1
1
1
0
1
0
0
0
1
0
0
0
1
1
1
0
1
0
1
1
1
0
0
1
0
0
1
0
1
0
0
1
1
1
0
1
1
0
0
0
0
1
0
1
0
1
0
1
0
1
1
1
1
LED
10
10
10
15
15
20
20
20
25
25
30
30
40
0
5
5
(mA)
PCB Layout Consideration
The FAN5608 is available in both a single Die Attach Pad
(DAP) and a dual DAP package. In the single DAP package,
DAP is connected to GND. In the dual DAP package, one
DAP is connected to GND and another to V
is not necessary to provide any external connection to the
DAPs. Since the internal power dissipation is low, both the
3x3mm and 4x4mm MLP packages are capable of dissipat-
ing maximum power, without providing any PCB land pat-
tern. When viewing the bottom of the package of a single
DAP device, a single exposed metal island can be seen; when
viewing the bottom of the package of a dual DAP device,
two electrically isolated exposed metal islands can be seen.
PRODUCT SPECIFICATION
OUT
, therefore it
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