LT3804EFE#TRPBF

Power Supply Controllers, Monitors Overview

The LT3804EFE#TRPBF is a secondary-side dual-output controller designed for isolated synchronous rectification in flyback and forward converters. It integrates an optocoupler driver to eliminate the need for external isolation components, simplifying design while maintaining high efficiency. The device operates with a fixed switching frequency of 800kHz and utilizes a 28-pin TSSOP-EP package for enhanced thermal performance. Key electrical characteristics include a supply current of 9mA and support for shutdown functionality, ensuring reliable operation in industrial power applications.

Power Supply Controllers, Monitors Feature Summary

• Integrates an optocoupler driver to remove the requirement for external isolation components in the feedback loop
• Provides secondary-side control for dual-output isolated DC/DC converter topologies
• Operates at a fixed 800kHz switching frequency to optimize transformer size and transient response

Power Supply Controllers, Monitors Applications

• Isolated flyback power supplies requiring dual outputs
• Forward converter designs with secondary-side synchronous rectification
• Industrial power systems needing simplified isolation feedback loops

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the 28-pin TSSOP-EP footprint matches your PCB layout requirements. Ensure compatibility with your target switching frequency and output configuration before finalizing procurement. Check current availability status as supply constraints may affect lead times.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing isolated converters that benefit from reduced component count by integrating optocoupler driving capabilities. It is suitable for applications requiring precise regulation of multiple secondary outputs without complex isolation circuitry. Consider the 800kHz frequency limit when determining magnetic component specifications and EMI filtering requirements.

Power Supply Controllers, Monitors Part Context

This part belongs to the LT38xx family of secondary-side controllers from Analog Devices. These devices are engineered to replace traditional optocoupler-based feedback networks in isolated power stages. The series supports various topologies including flyback and forward converters, offering improved line and load regulation compared to primary-side sensing methods.

Power Supply Controllers, Monitors Replacement Considerations

LT3804EFE#PBF is the tube-packaged equivalent of this reel-part number.