LTC4421 Prioritized PowerPath™ Controller

Analog Devices Inc.  LTC4421 Prioritized PowerPath™ Controller is designed to drive external N-Channel MOSFETs to connect one of  two input supplies to a common output, based on user-defined priority and validity. By definition, the supply connected to V1 is the higher  priority supply, although this can be changed dynamically.  External resistive dividers set the undervoltage and overvoltage  thresholds that bound the valid voltage window.