LTC7862HFE#TRPBF

Overview

The LTC7862HFE#TRPBF is a high-efficiency switching surge stopper manufactured by Analog Devices Inc. It operates within an input voltage range of 4 VDC to 140 VDC, with an absolute maximum rating of 150 VDC. The device utilizes a QFN-20 package and supports surface-mount installation. Designed for board mounting, it functions as a switch-mode power protection circuit that limits output voltage and current during overvoltage or overcurrent transients. The component is rated for operation between -40°C and +125°C.

Feature Summary

• Provides high-efficiency switching protection against input voltage surges
• Clamps output voltage to protect downstream components during faults
• Supports 100% duty cycle pass-through mode during normal operation

Applications

• Automotive power bus protection
• Avionics systems
• Industrial power applications

Procurement Notes

Verify the specific suffix HFE against official documentation to confirm temperature grade and packaging configuration. Confirm RoHS compliance status through the manufacturer datasheet. Check availability constraints as supply may be limited. Ensure the QFN-20 package dimensions match the target PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring robust transient protection for sensitive electronics. It is suitable for systems operating on 28V automotive buses subject to load dump events. Consider the thermal performance and external fault timer capacitor selection to ensure safe peak operating temperatures are maintained during prolonged surge conditions.

Part Context

This part belongs to the LTC7862 series of switching surge stoppers. It serves as an advanced alternative to linear surge suppressors by offering higher efficiency and greater power handling capabilities. The device integrates control logic to drive an external N-channel MOSFET, enabling effective management of inductive energy stored in long power lines.

Replacement Considerations

Public confirmed substitute part numbers are not available.