batteries - Controlling a LDO with voltage detector

For one of my project I need to shutdown my system when my Li-ion battery reaches 3V.
But I want to know if I can use this type of component : http://www.farnell.com/datasheets/11601.pdf
http://www.farnell.com/datasheets/76549.pdf
http://www.farnell.com/datasheets/11603.pdf
For detecting the battery voltage and disabling my LDO? I know they are designed to be used for the Reset of microcontrollers.

But it should work just fine by using one of those three no?

Thank you in advance !

EDIT :

I first wanted to use the TC54 from Microchip which is designed for this purpose but it seems to be obsolete...

I also need the system to be through hole.. This is why I don't use a battery protection chip, because I could not find one..

Answer

You can get a combined charge and discharge protector like this: -

This might be more of an effective solution. If you just want a low discharge current solution that is available in through-hole components then this might be of interest: -