LTC4419IDD#PBF

OR Controllers, Ideal Diodes Overview

The LTC4419IDD#PBF is a dual-input monolithic PowerPath priority supervisor featuring low operating current. It provides backup switching during undervoltage and power loss to maintain critical circuit operation. The device utilizes internal 2Ω, current-limited PMOS switches for path selection between a primary input (V1) and a backup input (V2). An adjustable voltage monitor with ±1.5% accuracy sets the V1-to-V2 switching threshold via an external resistive divider. Fast non-overlapping switching prevents reverse and cross-conduction while minimizing output voltage drop.

OR Controllers, Ideal Diodes Feature Summary

• Internal dual 2Ω, 0.5A current-limited PMOS switches provide efficient power path selection
• Adjustable voltage monitor allows flexible setting of the switching threshold between inputs
• Fast non-overlapping switching circuitry prevents reverse and cross-conduction currents
• Freshness seal mode isolates the backup battery during storage or shipping

OR Controllers, Ideal Diodes Applications

• Low-power battery backup systems
• Portable electronic devices
• Point-of-sale (POS) equipment
• Systems requiring priority selection from two input sources

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix IDD#PBF against the manufacturer datasheet to confirm package type and temperature range. Confirm RoHS compliance status as indicated in official documentation. Ensure the ordering part number matches the required pinout and thermal performance specifications for the target application design.

OR Controllers, Ideal Diodes Selection Notes

Select this component when low quiescent current and minimal standby drain are critical requirements. The adjustable threshold feature offers flexibility compared to fixed-threshold alternatives. Verify that the internal switch current limits and voltage ratings align with the specific load and input supply characteristics of the design.

OR Controllers, Ideal Diodes Part Context

This device belongs to the LTC441x family of PowerPath supervisors designed for managing multiple power sources. It serves as a specialized power management IC intended to ensure system continuity by seamlessly transitioning between primary and backup supplies without significant power interruption or excessive current draw.

OR Controllers, Ideal Diodes Replacement Considerations

Public confirmed substitutes include LTC4413-1, LTC4413-2, LTC4416, LTC4414, LTC4412HV, LTC4412, LTC4411, and LTC4410.