The LTC4418 is a dual input power prioritizer for 2.5V to 40V systems. To enable portability, preserve memory during brownouts, and ensure a graceful shutdown on power loss, electronic systems employ batteries and capacitors for backup power. The LTC4418 normally powers the load from the higher priority main supply such as a wall adapter or ...
This story continues at LTC4418 dual input power prioritiser.
Or just read more coverage at Electronics Weekly