LT3958EUHE#TRPBF

Overview

The LT3958EUHE#TRPBF is a high-voltage switching regulator IC manufactured by Analog Devices Inc., housed in a 36-WFQFN package with an exposed thermal pad. It supports multiple topologies including boost, Cuk, flyback, SEPIC, and inverting configurations to generate positive or negative adjustable outputs ranging from 1.6V to 84V. The device operates with an input voltage range of 5V to 80V and delivers a switch current capability of 3.3A. It features a programmable switching frequency between 100kHz and 1MHz and functions within a junction temperature range of -40°C to +125°C.

Feature Summary

• Supports versatile converter topologies including boost, Cuk, flyback, SEPIC, and inverting configurations for flexible system design.
• Capable of generating both positive and negative output voltages from a single wide input voltage range.
• Features a wide operating input voltage range suitable for high-voltage industrial applications.

Applications

• Industrial power supply systems requiring isolated or non-isolated high-voltage conversion
• Automotive electronics utilizing wide input voltage ranges
• LED lighting drivers requiring specific voltage step-up or inversion

Procurement Notes

Verify the exact suffix #TRPBF indicates tape and reel packaging when ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the QFN-36 footprint matches the PCB layout specifications. Validate that the 80V maximum input rating aligns with the system's peak voltage conditions to prevent component damage.

Selection Notes

Select this component when a single IC must support multiple topology options such as SEPIC or flyback without changing parts. Consider the 3.3A switch current limit against the required load demands. Evaluate the need for negative output generation which distinguishes it from standard boost-only regulators. Verify thermal management requirements due to the exposed pad design in the 36-QFN package.

Part Context

This part belongs to the LT3958 series of high-voltage DC/DC converters designed for demanding industrial environments. It shares the same core architecture and pinout compatibility with the LT3957, though the LT3958 offers higher voltage and current capabilities. The EUHE designation specifies the extended temperature grade and specific package variant within the Analog Devices portfolio.

Replacement Considerations

LT3958IUHE#TRPBF is a verified alternative within the same series offering identical functionality and pinout compatibility.