TLC5922 Datasheet, PDF (13/16 Pages) Texas Instruments – LED DRIVER

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TLC5922
SLVS486 – SEPTEMBER 2003
PRINCIPLES OF OPERATION (continued)
Constant Output Current - Reference Resistor
Figure 13 shows the maximum output current, I_OLC, versus R_(IREF) . In Figure 13, R_(IREF) is the value of the
resistor between IREF terminal to ground, and I_OLC is the constant output current of OUT0,.....OUT15.
100 k
Reference Resistor
vs
Output Current
48.8 k
V_Outn = 1 V
DC = 127
10 k
9.76 k
4.88 k
2.44 k
1.63 k
1.22 k
1k
976 ₈₁₃
697
100
0
0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08
I_OLC − Output Current − mA
Figure 13
13