LTC4421CUHE#PBF

OR Controllers, Ideal Diodes Overview

The LTC4421CUHE#PBF is a high-power prioritized PowerPath controller manufactured by Analog Devices Inc. It manages power distribution between two sources, typically a primary supply and a backup battery, ensuring continuous operation during source transitions. The device operates within an input voltage range of up to 28V and supports load currents up to 2A. It features low-loss ideal diode functionality for efficient power transfer. The component is housed in a 28-lead QFN package (5mm x 6mm) and is rated for commercial operating temperatures from -40°C to +85°C.

OR Controllers, Ideal Diodes Feature Summary

• Prioritized PowerPath management for seamless switching between primary and backup power sources
• Integrated low-loss ideal diode control for high-efficiency power transfer
• Supports external N-channel MOSFETs for customizable current handling and loss optimization

OR Controllers, Ideal Diodes Applications

• Portable electronic devices requiring uninterrupted power supply
• Industrial equipment with redundant power architectures
• Telecommunications infrastructure utilizing backup battery systems

OR Controllers, Ideal Diodes Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and reel or tube packaging as per manufacturer standards. Confirm RoHS compliance status through official Analog Devices documentation before integration. Ensure the commercial temperature grade (-40°C to +85°C) meets your system's environmental requirements. Cross-reference the 28-QFN footprint with your PCB layout guidelines.

OR Controllers, Ideal Diodes Selection Notes

Select this component when prioritizing one power source over another while maintaining low voltage drop during normal operation. It is suitable for applications requiring integrated load switch and ideal diode functions without external discrete components for basic control. Consider the 2A current capability and 28V maximum input rating against your system's peak loads. Evaluate the need for external MOSFETs if higher current or lower RDS(on) is required beyond internal limits.

OR Controllers, Ideal Diodes Part Context

This part belongs to the LTC4421 family of PowerPath controllers designed by Analog Devices. It serves as a solution for managing dual-input power systems, commonly found in portable and industrial electronics. The CUHE variant specifies the commercial temperature range and QFN package type, distinguishing it from extended temperature or alternative package options within the same functional series.

OR Controllers, Ideal Diodes Replacement Considerations

Potential substitutes include the LTC4412HV for higher voltage applications or the LTC4417 for similar prioritization features. Verify pin compatibility and electrical specifications such as input voltage range and current capacity before substitution.