LT3840IFE#PBF

Overview

The LT3840IFE#PBF is a high voltage synchronous step-down switching regulator controller from Analog Devices. It operates from a wide input supply range of 2.5V to 60V. The device supports an adjustable switching frequency between 50kHz and 1MHz. It features accurate current limit control and integrates a buck-boost supply for gate drive. The component is housed in a QFN-38 package and is designed for surface mount installation.

Feature Summary

• Wide input voltage range capability from 2.5V to 60V
• Accurate current limit control functionality
• Integrated buck-boost supply for MOSFET gate drive

Applications

• Industrial power supplies
• Telecommunications systems
• Distributed power architectures

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status according to manufacturer documentation. Confirm the QFN-38 package dimensions and thermal pad requirements against your PCB layout specifications. Ensure the operating temperature range meets your environmental design constraints before finalizing procurement orders.

Selection Notes

Select this controller when a wide input voltage range up to 60V is required with precise load protection. Consider the integrated gate drive supply if external bootstrap circuits are undesirable. Evaluate the need for adjustable switching frequencies to optimize efficiency and filter size for your specific application topology.

Part Context

This component belongs to the LT3840 series of high voltage synchronous regulators. It functions as a controller requiring external MOSFETs for power handling. The series is designed for applications demanding robust performance across varying input conditions and load profiles.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Consult official Analog Devices documentation for direct pin-compatible alternatives or functional equivalents.