LT3757AEMSE#PBF

Overview

The LT3757AEMSE#PBF is a wide input range, current mode DC/DC controller manufactured by Analog Devices Inc. It supports Boost, Flyback, SEPIC, and Inverting topologies with positive or negative output configurations. The device operates within a supply voltage range of 2.9V to 40V and features an adjustable switching frequency from 100kHz to 1MHz. Packaged in a 10-MSOP-EP (Exposed Pad) surface-mount case, it includes control features such as enable, frequency control, and soft start. The component is rated for operation between -40°C and 125°C junction temperature.

Feature Summary

• Supports multiple converter topologies including boost, flyback, SEPIC, and inverting configurations
• Capable of generating both positive and negative output voltages
• Features clock synchronization capability for multi-phase or parallel applications
• Integrates enable, frequency control, and soft start functions

Applications

• Industrial power supplies requiring wide input ranges
• Battery-powered systems utilizing SEPIC or boost architectures
• Telecommunications equipment needing isolated or non-isolated DC-DC conversion
• Automotive electronics operating under variable voltage conditions

Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the MSOP-EP package variant matches thermal requirements. Ensure ordering documentation references the full manufacturer part number to distinguish from non-exposed pad versions. Cross-reference datasheet revisions for any recent material declaration updates prior to final procurement approval.

Selection Notes

Select this controller when application requires flexibility across boost, flyback, SEPIC, and inverting topologies. The wide input voltage range suits battery and industrial sources. Consider the exposed pad package for improved thermal dissipation compared to standard MSOP options. Verify that external component selection aligns with the specified 100kHz to 1MHz frequency range and current mode control architecture.

Part Context

This component belongs to the LT3757 family of DC/DC controllers designed for versatile power conversion needs. It complements other Analog Devices PMIC solutions by offering multi-topology support in a compact surface-mount package. The series is intended for engineers designing complex power stages where input voltage variability or output polarity inversion is required.

Replacement Considerations

LT3757AEMSE#TRPBF: Identical electrical specifications and functionality; differs only in tape-and-reel packaging format instead of tube.