LT3757AEMSE#TRPBF

Overview

The LT3757AEMSE#TRPBF is a wide input range, current mode DC/DC controller from Analog Devices Inc., designed for versatile power conversion topologies including Boost, Flyback, SEPIC, and Inverting configurations. It supports both positive and negative output voltages with a single output channel. The device operates within a supply voltage range of 2.9V to 40V and features an adjustable switching frequency between 100kHz and 1MHz. Key electrical parameters include a typical operating supply current of 1.6mA, rise time of 22ns, and fall time of 20ns. It is housed in a 10-MSOP-EP package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Supports multiple converter topologies including Boost, Flyback, SEPIC, and Inverting circuits
• Capable of generating either positive or negative output voltages
• Features clock synchronization capability for multi-phase or parallel applications
• Includes integrated control characteristics such as enable, frequency control, and soft start

Applications

• Industrial power supplies requiring wide input ranges
• Battery-powered systems utilizing SEPIC or Inverting topologies
• Automotive electronics needing robust voltage regulation
• Telecommunications equipment with isolated flyback requirements

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the LT3757A variant meets your thermal and electrical requirements compared to the standard LT3757. Check official distributor availability as supply status may vary. Ensure compatibility with your PCB footprint for the 10-MSOP-EP package. Review the latest datasheet revision for any updates to pinout or electrical specifications before finalizing procurement.

Selection Notes

Select this component when a wide input voltage range up to 40V is required alongside flexible topology options. The current mode architecture provides inherent line and load regulation benefits. Consider the LT3757A specifically if its defined performance characteristics align better with your design than the standard LT3757. Evaluate the need for clock synchronization if integrating into larger power systems. Ensure the 10-MSOP-EP package fits within your spatial constraints.

Part Context

This part belongs to the LT3757 family of DC/DC controllers manufactured by Analog Devices Inc. (formerly Linear Technology). The family includes variants like the LT3757 and LT3758, which share similar functional cores but may differ in specific electrical ratings or additional features. These controllers are widely used in applications demanding high efficiency and flexibility in power stage configuration.

Replacement Considerations

The LT3757IMSE#TRPBF and LT3757EMSE#TRPBF are related parts within the same family. Verify if the standard LT3757 meets your specifications instead of the 'A' variant. No direct cross-brand substitutes are confirmed in public documentation; consult Analog Devices for qualified alternatives.