LM3464 Datasheet, PDF (20/33 Pages) National Semiconductor (TI) – 4 Channel LED Driver Evaluation Board

LM3464, LM3464A
SNVS652F – APRIL 2010 – REVISED MAY 2013
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CONNECTION TO LED ARRAYS
When LEDs are connected to the LM3464/64A driver stage through long cables, the parasitic components of the
cable harness and external MOSFETs may resonant and eventually lead to unstable system operation. In
applications that the cables between the LM3464/64A driver circuit and LED light engine are longer than 1 meter,
a 4.7kΩ resistor should be added across the GDx pins to GND as shown in Figure 25.
Figure 25. Additional Resistor Across GDx and SEx for Cable Harness Over 1m Long
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