LT1941EFE#TRPBF

Overview

The LT1941EFE#TRPBF is a triple current mode DC/DC converter featuring internal power switches. It integrates two step-down converters with 3A and 2A capabilities, alongside one step-up or SEPIC regulator. The device operates with an input voltage range of 3.5V to 25V and provides adjustable output voltages from 1.25V to 40V. Packaged in a 28-lead TSSOP with exposed pad (TSSOP-EP-28), it supports surface mount installation. The controller includes soft-start functionality and thermal shutdown protection for reliable operation in compact designs.

Feature Summary

• Integrates three independent switching regulators within a single monolithic package
• Combines dual buck converters with a boost or SEPIC topology for flexible power rail generation
• Includes internal power switches to minimize external component count
• Features thermal shutdown protection to safeguard against overheating conditions

Applications

• Portable equipment requiring multiple power rails from a single source
• Battery-powered systems needing efficient step-up and step-down conversion
• Industrial control modules with mixed voltage requirements
• Communication infrastructure utilizing distributed power architectures

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the 28-lead TSSOP-EP package. Cross-reference the datasheet for exact electrical characteristics relevant to your design. Validate compatibility with your PCB footprint and thermal management strategy before finalizing procurement.

Selection Notes

Select this component when designing systems requiring three distinct regulated outputs from a single input source. It is suitable for applications where board space is limited due to its integrated switch architecture. Consider the input voltage range of 3.5V to 25V for battery or bus-powered designs. Evaluate the need for both buck and boost/SEPIC functions to determine if this triple converter meets all power rail requirements efficiently.

Part Context

The LT1941 belongs to Analog Devices' family of high-efficiency switching regulators. It is designed to simplify power supply design by integrating multiple converter topologies. The EFE variant denotes the specific temperature grade and package type. This series targets applications demanding high density and reduced bill of materials through integration.

Replacement Considerations

Check for direct pin-compatible alternatives within the Analog Devices portfolio. Verify that substitute parts support the same triple converter architecture. Ensure input/output voltage ranges and current ratings meet or exceed original specifications. Confirm package dimensions match the existing PCB layout to avoid mechanical rework.