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.

• 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 Built-In V2 Test with Optional V2 Disconnect n V2 Freshness Seal/Ship Mode n ±1.5% Accurate Adjustable Switchover Threshold n ±2.3% Accurate V2 Monitor and Comparator n Overcurrent and Thermal Protection.