LTC4364CDE-1#PBF

Overview

The LTC4364CDE-1#PBF is a board mount surge protector and ideal diode controller manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 80 VDC and features an SMD/SMT termination type in a DFN-14 package measuring 4 mm x 3 mm x 0.75 mm. The device has a minimum operating temperature of -40 C and a maximum of +125 C, with a quiescent current rating of 750 uA. Designed for automotive, avionics, and industrial applications, it provides comprehensive protection against overvoltage, undervoltage, and reverse polarity events.

Feature Summary

• Integrates ideal diode functionality to replace traditional Schottky diodes, significantly reducing forward voltage drop and power loss during normal operation.
• Actively controls external N-channel MOSFETs to limit and clamp output voltage during high-voltage transients such as automotive load dump.
• Provides bidirectional protection including reverse input protection up to -40V and reverse output protection up to -20V.
• Features a latched-off fault response mode that disables the output upon detection of faults, requiring manual intervention to reset.

Applications

• Automotive systems protection against load dump and supply transients
• Avionics power distribution networks requiring high reliability
• Industrial equipment safeguarding sensitive loads from voltage spikes

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status and check for specific manufacturing date codes relevant to project requirements. Ensure proper ESD handling procedures are followed during storage and assembly due to the sensitivity of the semiconductor junctions.

Selection Notes

Select this model when a latched-off fault response is required for safety-critical applications where automatic retry is undesirable. Choose the CDE suffix for commercial temperature ranges if specified, though datasheet indicates HDE variants cover wider ranges. Ensure external MOSFET selection matches the voltage and current ratings supported by the controller's gate drive capabilities.

Part Context

This component belongs to the LTC4364 series of Surge Stoppers with Ideal Diode controllers. It is part of a family that includes variants like LTC4364CDE-2 and LTC4364HDE-1, differing primarily in fault response behavior (auto-retry vs. latch-off) and operating temperature specifications. The series is designed for robust power path management in demanding environments.

Replacement Considerations

LTC4364CDE-2#PBF offers identical electrical characteristics but provides an auto-retry fault response instead of latched-off. LTC4364HDE-1#PBF provides the same latched-off function but is rated for a wider industrial temperature range (-40°C to +125°C). Verify pinout compatibility and thermal performance when substituting.