LT3757AHMSE#PBF

Overview

The LT3757AHMSE#PBF is a wide input range, current mode DC/DC controller manufactured by Analog Devices Inc. It supports Boost, Flyback, SEPIC, and Inverting topologies to generate positive or negative output voltages. The device operates with a supply voltage range of 2.9V to 40V and features an adjustable switching frequency from 100kHz to 1MHz. It includes clock synchronization capability and control features such as enable, frequency control, and soft start. The component is housed in a 10-MSOP-EP package and is rated for operation between -40°C and 125°C.

Feature Summary

• Supports multiple converter topologies including Boost, Flyback, SEPIC, and Inverting configurations.
• Capable of generating both positive and negative output voltages from a single controller.
• Features clock synchronization for noise immunity and multi-phase operation.
• Includes integrated soft start and enable functions for controlled power-up sequences.

Applications

• Industrial power supplies requiring isolated or non-isolated outputs
• Telecommunications equipment with wide input voltage ranges
• Automotive electronics systems needing robust DC/DC conversion
• Portable devices utilizing battery sources with varying voltage levels

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when ordering. Confirm that the 'A' grade designation meets your temperature and performance requirements. Check official Analog Devices documentation for the latest RoHS status and environmental compliance data. Ensure the 10-MSOP-EP package dimensions align with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this controller if your design requires flexibility in topology choice, supporting boost, flyback, SEPIC, or inverting circuits. Consider the wide input voltage range suitable for applications with variable source voltages. Evaluate the need for synchronized switching frequencies to reduce electromagnetic interference in dense layouts. Verify that the current mode control architecture fits your transient response requirements.

Part Context

The LT3757 series belongs to Analog Devices' portfolio of high-performance DC/DC controllers. It is designed for applications demanding versatility in power conversion topologies. The device complements other Linear Technology derived components by offering broad operational flexibility within a compact surface-mount package.

Replacement Considerations

Direct replacements include the LT3757AIMSE#PBF and LT3757AIDD#PBF, which share similar functional specifications but may differ in package type or temperature grade. Verify pin compatibility and thermal characteristics when substituting. Consult Analog Devices for qualified alternatives if the MSOP-EP package is unavailable.