LTC4420 Datasheet - Linear Technology

LTC4420 18V Dual Input Micropower PowerPath Prioritizer

The LTC®4420 is a dual input monolithic PowerPath™ prioritizer, with low operating current, that provides backup switchover for keeping critical circuitry alive during brownout and power loss conditions. Unlike diode-OR products, little current is drawn from the inactive supply even if its voltage i.

LTC4420 Features

* n Selects Highest Priority Valid Supply from Two Inputs n Wide 1.8V to 18V Operating Range n Internal Dual 2Ω, 0.5A Switches n Low 3.6µA Operating Current n Low 320nA V2 Current When V1 Connected to OUT n Blocks Reverse and Cross Conduction Currents n Reverse Supply Protection to

* 15V n Buil

LTC4420-LinearTechnology.pdf