LT3759IMSE#PBF

Overview

The LT3759IMSE#PBF is a wide input range, current mode DC/DC controller designed for versatile power conversion topologies. It supports boost, flyback, and SEPIC configurations with synchronous rectification capabilities. The device regulates positive or negative output voltages from a single supply and offers isolation-capable outputs. Operating within a 100kHz to 1MHz switching frequency range, it features integrated clock synchronization and comprehensive control characteristics including enable, frequency control, power good, and soft start functions.

Feature Summary

• Supports multiple converter topologies including boost, flyback, and SEPIC
• Capable of regulating both positive and negative output voltages
• Features integrated clock synchronization for system timing alignment
• Includes comprehensive control features such as soft start and power good indication

Applications

• Industrial power supplies requiring wide input voltage ranges
• Automotive electronics utilizing boost or flyback architectures
• Battery-powered systems needing step-up or step-down regulation
• Isolated power conversion designs in communication equipment

Procurement Notes

Verify the specific suffix #PBF indicates the tube package variant when ordering. Confirm that the 12-MSOP-EP package matches the target PCB footprint. Ensure the operating temperature range of -40°C to 125°C aligns with the application environment. Cross-reference the datasheet revision history for any recent design or specification changes before finalizing procurement.

Selection Notes

Select this component when a single controller must support multiple topologies like boost, flyback, or SEPIC. It is suitable for applications requiring both positive and negative output regulation from one input source. Consider its wide input range and current mode architecture for robust performance across varying load conditions. Verify compatibility with external MOSFETs and transformer specifications for the chosen topology.

Part Context

This part belongs to the LT3759 family of wide input range DC/DC controllers manufactured by Analog Devices Inc. It is distinct from LED-specific drivers like the LT3755, focusing instead on general-purpose voltage regulation. The IMSE designation specifies the industrial temperature grade and the MSOP-EP package type with an exposed pad for thermal management.

Replacement Considerations

Direct substitutes include other parts within the LT3759 family with different package options, such as LT3759IMSE#TRPBF for tape and reel packaging. Evaluate alternative controllers from Analog Devices that offer similar topology flexibility and input voltage ranges if pin-to-pin compatibility is not required.