LTC4420IDD#PBF

OR Controllers, Ideal Diodes Overview

The LTC4420IDD#PBF is a dual-input micropower PowerPath prioritizer manufactured by Analog Devices Inc. It operates within an input voltage range of 1.8V to 18V and utilizes a 12-pin DFN EP package. The device provides backup switchover functionality to maintain critical circuit operation during brownout or power loss conditions. Unlike diode-OR products, it draws minimal current from inactive supplies even when their voltage exceeds the active supply. This component is designed for high-efficiency backup power applications.

OR Controllers, Ideal Diodes Feature Summary

• Provides automatic backup switchover for critical circuitry during power loss events
• Minimizes current draw from inactive power sources regardless of relative voltage levels
• Integrates low operating current characteristics for efficient power management

OR Controllers, Ideal Diodes Applications

• High efficiency backup supply systems
• Brownout protection circuits
• Power loss condition maintenance for critical logic

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix #PBF indicates tube packaging as per manufacturer standards. Confirm the IDD variant matches the required temperature range and pin configuration for your PCB layout. Cross-reference the datasheet revision to ensure compatibility with existing design specifications. Validate that the 12-pin DFN EP footprint aligns with your assembly requirements before finalizing procurement orders.

OR Controllers, Ideal Diodes Selection Notes

Select this component when dual-input prioritization is required without the voltage drop associated with diode ORing. It is suitable for applications needing low quiescent current and precise backup switching. Consider the 1.8V to 18V input range against your system's nominal voltages. Ensure the thermal performance of the DFN EP package meets your board's heat dissipation capabilities.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4420 family of PowerPath controllers. It serves as a monolithic solution for managing multiple power inputs. The device simplifies design by integrating prioritization logic and backup monitoring. It replaces discrete diode-based solutions to improve overall system efficiency and reliability in portable and battery-backed applications.

OR Controllers, Ideal Diodes Replacement Considerations

Public confirmed substitutes include LTC4420CDD and LTC4420IMSE. These variants offer identical functional descriptions but may differ in package type or temperature grade. Verify pinout compatibility and electrical specifications before substitution.