LT3757AIMSE#PBF

Overview

The LT3757AIMSE#PBF is a DC/DC switching controller from Analog Devices Inc., designed for boost, flyback, SEPIC, and inverting topologies. It supports positive and negative output configurations with a single output channel. The device operates on a supply voltage range of 2.9V to 40V and features an adjustable switching frequency between 100kHz and 1MHz. It utilizes current mode control architecture and includes clock synchronization capabilities. The component is housed in a 10-MSOP-EP package with an exposed pad, suitable for surface mount installation.

Feature Summary

• Supports multiple converter topologies including boost, flyback, SEPIC, and inverting configurations
• Capable of generating both positive and negative output voltages
• Features internal clock synchronization for multi-phase or parallel operation
• Includes control characteristics such as enable, frequency control, and soft start

Applications

• Industrial power supplies requiring wide input ranges
• Battery-powered systems utilizing boost or SEPIC architectures
• Negative voltage generation circuits
• Flyback converters in isolated power applications

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the MSOP-EP package variant matches the required thermal dissipation needs. Ensure the ordering code aligns with the exact temperature grade and pinout configuration specified in the official datasheet to avoid compatibility issues with existing PCB footprints.

Selection Notes

Select this controller when a wide input voltage range up to 40V is required alongside flexible topology options. It is suitable for designs needing synchronized switching frequencies to reduce EMI or manage phase alignment. Consider the 10-MSOP-EP package for space-constrained applications requiring adequate thermal performance through the exposed pad connection.

Part Context

The LT3757 series comprises wide input range, current mode DC/DC controllers. The LT3757A variant offers enhanced specifications compared to the standard LT3757. These components are part of Analog Devices' portfolio for versatile power management solutions, supporting various step-up, step-down, and isolated converter designs across industrial and commercial sectors.

Replacement Considerations

LT3757AIMSE#TRPBF serves as the tape and reel version of the same functional component. LT3757AEDD#PBF and LT3757AIDD#PBF offer alternative packages (DFN) within the same family. Verify pinout and thermal requirements when substituting between MSOP and DFN packages.