LM3464 Datasheet, PDF (23/33 Pages) National Semiconductor (TI) – 4 Channel LED Driver Evaluation Board

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The value of R_IN is governed by the following equations:
LM3464, LM3464A
SNVS652F – APRIL 2010 – REVISED MAY 2013
(27)
Maximum value of R_IN:
(28)
Minimum value of R_IN:
(29)
So the value of R_IN must be in the range:
(30)
To minimize power dissipations on both the Z_IN and R_IN, a standard 9.31kΩ resistor can be selected for the R_IN.
Then the maximum power dissipation on R_IN is:
(31)
Thus, a standard 9.38kΩ resistor with 2512 package (1W) and 1% tolerance can be used.
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