LT4321IUF#PBF

OR Controllers, Ideal Diodes Overview

The LT4321IUF#PBF is an ideal diode controller manufactured by Analog Devices Inc., designed for professional power management applications. It operates within a supply voltage range of 20 V to 80 V and supports output voltages between 7.7 V and 11 V, with a maximum output voltage of 11 V. The device features a low input current of 500 uA and functions reliably across an operating temperature range from -40 C to +85 C. Packaged in a QFN-16 surface-mount format, this component serves as a critical control element for PoE ideal diode bridge configurations.

OR Controllers, Ideal Diodes Feature Summary

• Functions as an ideal diode controller for power path management
• Supports high-voltage operation up to 80 V
• Designed for Power over Ethernet (PoE) applications

OR Controllers, Ideal Diodes Applications

• Power over Ethernet (PoE) Powered Device implementations
• Ideal diode bridge control circuits
• Professional power management system design

OR Controllers, Ideal Diodes Procurement Notes

Verify availability status carefully as the component may be subject to restricted supply conditions or limited distribution channels. Confirm that the specific suffix #PBF aligns with lead-free packaging requirements for your assembly process. Ensure compatibility with the intended QFN-16 footprint and verify that the 20 V to 80 V input range matches your system's power architecture before finalizing procurement decisions.

OR Controllers, Ideal Diodes Selection Notes

Select this controller when designing systems requiring robust power path management with high input voltage tolerance. The QFN-16 package suits space-constrained surface-mount designs. Consider the 500 uA quiescent current for efficiency optimization. Validate thermal performance within the -40 C to +85 C industrial range. Ensure the external MOSFET selection complements the controller's drive capabilities for optimal ideal diode performance.

OR Controllers, Ideal Diodes Part Context

This component belongs to the LT4321 series of ideal diode controllers from Analog Devices. It is specifically engineered for PoE applications, often evaluated alongside related controllers like the LT4275 and LT4276 using demonstration boards such as the DC2093A-B. The part integrates precision control logic to minimize power loss compared to standard diode solutions.

OR Controllers, Ideal Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.