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LM3429: LM3429

Part Number: LM3429
Other Parts Discussed in Thread: TPS92692, TPS92691

Hi,

I am planning to do a design using the LM3429 and I don't want to use the analog dim function as it could lead to potential problems. I am considering to use two sets of RSNS resistors, one to set the current at 600mA and another one to set the current at 60mA.I could do that if the RSNS is on the bottom side of the LEDs rather than on the top side,can the Rsns be on the bottom side of the LEDs without generating any problem?. My application is a boost with a nominal Vin of 24V and a Vout of 33V.

The reason I don't want to use the analog dim function is because it is sensible to noise and also I could be leading to edge blanking time when using the analog dimming feature.

Could I also lead to to edge blanking time setting the current at 60mA using the Rsns?

What other implication could I face if I use two different Rsns to set two different currents?

Thanks in advance