TLC5905 Datasheet, PDF (21/27 Pages) Texas Instruments – LED DRIVER

PRINCIPLES OF OPERATION
TLC5905
LED DRIVER
SLLS401 – NOVEMBER 1999
noise reduction (continued)
90
80
70
60
50
40
30
20
10
0
0.1
1.0
10.0
RIREF – kΩ
Conditions : VO = 1 V, V(IREF) = 1.24 V
^ _W IOLC(mA)
V(IREF)(V)
R(IREF)(k )
37
W ^ R(IREF) (k )
47
IO(LC)(mA)
NOTE: The output current is in 16 bit mode. When in 8 bit mode (MODE=L), the output current is the sum of both outputs. This sum current should
be set from 10 mA to 120 mA. The resistor, R(IREF), should be located as close to the IREF terminal as possible to avoid the noise influence.
Figure 8. Current on Constant Current Output vs External Resistor
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