LM25141: About DCR current sensing

Part Number:LM25141

Hi Team,

We would like to use the DCR current sensing at the following conditions.

I calculated “current limit at DCR current sensing” and "CCS" and "RCS" according to the datasheet.

[Conditions]

VIN=4.5V to 20V

VOUT=3.8V

IOUT=3.0A(max)

Fsw=440kHz

LOUT=6.8uH (DCR is 18.4mohm)

(Current limit is around 3.88A at DCR current sensing according to calculation (12))

[My result]

-Current limit is around 3.88A

-CCS is 3.3uF

-RCS is 100ohm

*“LOUT/RDCR” is 0.000369 and “CCS*RCS” is 0.00033.

So “CCS*RCS” is nearly equal to “LOUT/RDCR”.

Is my understanding correct?

Could you please let us know if you have any concern and recommended other value?

Regards,

Kanemaru