Other Parts Discussed in Thread: TPS3825, TPL5110,
for power saving during standby mode, I would like to use the the TPS3825 RESET pin to switch on and off a pMOS that enables the uP 5V supply: when the uP switches on, it makes its evaluation and if the standby mode must continue it force the MR low so RESET goes high and the pMOS is switched off and for the time-out period the uP is switched off because 5V supply is not present. After the time-out period the sequence repeats, as long as the uP sends back the MR command. Otherwise, if the MR is not asserted then the system exits the standby mode, remaining active.
1) Do you think the system could work? it would be a similar function of using the TPL5110, which I can not use because it's not P2P compatible.
2) The time-out period after MR goes high is actually the t-delay time ? if this is true, could you suggest a similar alternative component (sot-23) with a t-delay of around 1.2-1.6 seconds?
3) Other/different components suggestion for this function ? they shall have a P2P alternative (as a back-up solution in case of purchasing problem)
Thank you in advance