LMR14010A: limit capability with capacitive load

Hello Lillian 

There are two limitations for maximum capacitance which IC can support

1. Device has fixed internal softstart which would put limitation maximum capacitance can be charged without hitting current limit
2. Devie has internal compensation which restrict max supported capacitance and its ESR for keeping stability margins in check  

I would recommend checking WEBECH simulations to arrive at maximum capacitance limit for customer use case. Let me know if face any issue in doing it. I would be happy to help

Thank you

Regards

Onkar Bhakare

Hi Onkar,

Thanks for reply.

By the way, can you please confirm the approximate hysteresis voltage of the SHDN pin? The current specification only gives the startup voltage. Or is the hysteresis voltage of this pin determined by the external pull-down resistor, and the hysteresis current in the specification × the pull-down resistor value of this pin is the hysteresis voltage of this pin?

Thanks

Lillian 

Hi Lillian

Lillian Liu(SH) said:

Or is the hysteresis voltage of this pin determined by the external pull-down resistor, and the hysteresis current in the specification × the pull-down resistor value of this pin is the hysteresis voltage of this pin?

you are absolutely correct; hysteresis voltage has to be determined from hysteresis current and EN resistor ladder used.

Thank you

Regards

Onkar Bhakare