LT3840MPFE#TRPBF

Overview

The LT3840MPFE#TRPBF is a high-voltage synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates from an input voltage range of 2.5V to 60V and supports output currents up to 20A. The device features a fixed switching frequency of 1MHz and low quiescent current of 6µA. It is housed in a 28-TSSOP-EP package and is designed for non-isolated buck or inverting topologies with a single output.

Feature Summary

• Supports wide input voltage range from 2.5V to 60V
• Provides accurate current limit functionality
• Features low quiescent current for efficient operation
• Capable of synchronous buck and inverting configurations

Applications

• Industrial power supplies
• Telecommunications equipment
• Point-of-load regulation modules

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure the 28-TSSOP-EP package footprint matches your PCB design guidelines before finalizing procurement.

Selection Notes

Select this controller for applications requiring high input voltages up to 60V. Consider the 1MHz switching frequency for balancing efficiency and component size. Evaluate thermal performance given the 20A output capability and ensure adequate heat dissipation for the TSSOP-EP package.

Part Context

This part belongs to the LT3840 series of high-voltage synchronous regulators. It serves as a controller IC, requiring external MOSFETs and passive components to complete the power stage. The MPFE variant denotes military-grade temperature range and reliability specifications compared to standard commercial versions.

Replacement Considerations

LT3840MPFE#PBF is a confirmed tube-packaged substitute offering identical electrical characteristics. Verify that the packaging difference does not impact automated assembly processes.