LTC4364HDE-1#PBF

Overview

The LTC4364HDE-1#PBF is a board-mount surge stopper with an integrated ideal diode controller, manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 80 VDC and has a quiescent current rating of 750 uA. The device functions in an industrial temperature range from -40 C to +125 C. It utilizes a 14-pin DFN package measuring 4 mm in length, 3 mm in width, and 0.75 mm in height, employing SMD/SMT termination. This component is designed for automotive, avionics, and industrial applications.

Feature Summary

• Provides comprehensive protection against high-voltage transients and surges by actively limiting and clamping output voltage during overvoltage events.
• Integrates an ideal diode controller that drives an external N-channel MOSFET to replace traditional Schottky diodes, reducing forward voltage drop and power loss.
• Features a latch-off fault response mechanism that maintains the external MOSFET in a closed state until manually reset via an external signal.

Applications

• Automotive systems requiring protection against load dump conditions
• Avionics power distribution networks exposed to transient voltage spikes
• Industrial equipment needing robust input overvoltage and reverse polarity protection

Procurement Notes

Verify availability status carefully as supply may be limited or restricted. Confirm the specific suffix matches the required industrial temperature grade and latch-off functionality. Ensure the 14-DFN footprint aligns with the PCB layout design. Cross-reference the datasheet for exact electrical characteristics relevant to the target operating environment before finalizing procurement decisions.

Selection Notes

Select this component when a latch-off response is preferred over auto-retry for safety-critical applications. The wide input voltage range supports various industrial and automotive bus architectures. The integrated ideal diode feature simplifies design by eliminating external blocking diodes. Verify that the external MOSFET selection meets the current and thermal requirements for the specific application load.

Part Context

This part belongs to the LTC4364 series of Surge Stoppers with Ideal Diodes. The HDE suffix indicates an extended industrial temperature range (-40°C to +125°C) compared to commercial variants. The -1 suffix denotes the latch-off fault mode, distinguishing it from the -2 variant which offers automatic retry functionality. All variants share the same core protection architecture but differ in thermal ratings and recovery behaviors.

Replacement Considerations

LTC4364CDE-1#PBF serves as a commercial-grade alternative with a 0°C to 70°C operating range. LTC4364HDE-2#PBF provides identical thermal and voltage specifications but features an auto-retry fault response instead of latch-off. Ensure the replacement matches the required fault handling strategy and environmental constraints.