LTC7004 for using LED SW

Hi 

There is a charge pump current to maintain the voltage across the boost cap (BST to TS pin).  When all the FETs are OFF, this current from each controller flows to GND via LEDs.  This could be the reason LED current is unstable.

Hi,

Thank you for your answer. Do you have any ideas for avoiding unstable LED current?

Thanks & regards,

Akira

Hi,

I think you can use P-channel FETs with P-ch FET drivers instead of N-Channel FETs.  P-Ch driver doesn't need a charge pump.

Regards,

Hi,

I think you can use P-channel FETs with P-ch FET drivers instead of N-Channel FETs.  P-Ch driver doesn't need a charge pump.

Regards,

Hi,

Thank you for your advice.

Thanks & regards,

Akira