LTC4419CMSE LTC4419IMSE LTC4419CDD LTC4419IDD LTC4419 - 18V Dual Input Micropower PowerPath Prioritizer
LTC4419CMSE LTC4419IMSE LTC4419CDD LTC4419IDD LTC4419 - 18V Dual Input Micropower PowerPath Prioritizer
Selects Highest Priority Valid Supply from Two Inputs
Wide 1.8V to 18V Operating Range
Internal Dual 2Ω, 0.5A Switches
Low 3.6µA Operating Current
Low 320nA V2 Current When V1 Connected to OUT
Blocks Reverse and Cross Conduction Currents
Reverse Supply Protection to –15V
V2 Freshness Seal/Ship Mode
±1.5% Accurate Adjustable Switchover Threshold
Two Auxiliary ±2.3% Accurate Voltage Comparators
Overcurrent and Thermal Protection
Thermally Enhanced 10-Pin 3mm × 3mm DFN and 12-Lead Exposed Pad MSOP Packages
The LTC4419 is a dual input monolithic PowerPath™ prioritizer with low operating current, that provides backup switchover for keeping critical circuitry alive during brown out and power loss conditions. Unlike diode-OR products, little current is drawn from the inactive supply even if its voltage is greater than the active supply.
Internal 2Ω, current limited PMOS switches provide power path selection from a primary input (V1) or a backup input (V2) to the output. An adjustable voltage monitor set via an external resistive divider provides flexibility in setting the V1 to V2 switchover threshold. When primary input V1 drops, the ADJ monitor input causes OUT to be switched to V2. Fast non-overlap switchover circuitry prevents both reverse and cross conduction while minimizing output droop.
The LTC4419 has two auxiliary comparators with open-drain outputs that provide flexible voltage monitoring. The V2ON output indicates if V2 is powering OUT. Freshness seal mode prevents V2 battery discharge during storage or shipment.
Low Power Battery Backup
Portable Equipment
Point-of-Sale (POS) Equipment
Brand Name : POCCIO
Type : Voltage Regulator
Model Number : LTC4419
Origin : CN(Origin)
Condition : New