LTC4364CDE-2#PBF

Overview

The LTC4364CDE-2#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 features a DFN-14 surface mount package measuring 4 mm in length, 3 mm in width, and 0.75 mm in height. The device supports a maximum operating temperature of +70°C and a minimum of 0°C. It includes reverse input protection up to -40V and reverse output protection up to -20V. The component utilizes an external N-channel MOSFET for surge suppression and ideal diode functionality, with a standby current of 10μA at 12V.

Feature Summary

• Provides comprehensive overvoltage and surge protection by actively limiting and clamping output voltage during transient events such as automotive load dump.
• Integrates an ideal diode controller that drives a second back-to-back N-channel MOSFET to replace traditional Schottky diodes, significantly reducing forward voltage drop and power loss.
• Features automatic retry mode upon fault detection with a 0.1% duty cycle, ensuring system recovery without manual intervention.
• Offers bidirectional protection including reverse input protection up to -40V and reverse output protection up to -20V.

Applications

• Automotive systems requiring protection against load dump and high-voltage transients
• Industrial control circuits needing robust power line protection
• Avionics equipment demanding reliable surge suppression

Procurement Notes

Verify the specific suffix CDE indicates commercial temperature range (0°C to 70°C) and -2 denotes automatic retry behavior. Confirm the DFN-14 package dimensions match design constraints. Ensure compatibility with external N-channel MOSFET selection for optimal performance. Check RoHS compliance status through official documentation before finalizing procurement orders.

Selection Notes

Select this model when automatic recovery after fault conditions is required rather than latched shutdown. Choose based on the 4V to 80V operating window and commercial temperature limits. Consider the DFN-14 footprint for space-constrained designs. Evaluate external MOSFET requirements for current handling and thermal management alongside the internal controller capabilities.

Part Context

This component belongs to the LTC4364 Surge Stopper series, which combines surge suppression with ideal diode functionality. The series includes variants with different temperature ranges and fault response modes. The CDE suffix specifies commercial grade operation, while the -2 suffix defines the automatic retry characteristic, distinguishing it from latched-off alternatives.

Replacement Considerations

LTC4364CDE-1#PBF offers identical electrical specifications but features a latched-off fault response instead of automatic retry. LTC4364HDE-2#PBF provides the same automatic retry function but extends the operating temperature range to industrial levels (-40°C to 125°C). Verify fault handling requirements when substituting.