User's Guide

ME910C1 HW User Guide
1VV0301351 Rev. 2 Page 42 of 81 2017-07-19
NOTE:
In case of power on with slow ramp-up of Vbatt supply voltage while
ON/OFF* is tied to GND (case possibile if timing are not properly
controlled), HW_SHUTDOWN* line has to be used according to
power on diagram in chapter 5.2.
NOTE:
Consider voltage drop under max current conditions when defining
the voltage detector thereshold in order to avoid unwanted shutdown.
Tipical timings are reported in the plot above when testing the example circuit with
Ctank=47mF.
The capacitor is rated with the following formula: