LT1424IS8-5#PBF

Overview

The LT1424IS8-5#PBF is a monolithic high-power switching regulator designed for isolated flyback topologies. It integrates a 20V, 1A switch with a fixed 5V output. The device operates from an input voltage range of 3V to 20V and delivers up to 400mA of output current. It functions at a switching frequency of 285kHz within an industrial temperature range of -40°C to +125°C. Packaged in an 8-pin SOIC, it provides a compact solution for generating isolated power rails.

Feature Summary

• Integrates a high-current internal switch to minimize external component count
• Designed specifically for isolated flyback converter applications
• Includes built-in protection features for robust operation

Applications

• Isolated DC-DC power supply modules
• Industrial control systems requiring galvanic isolation
• Telecommunications equipment power stages

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the IS8 package variant matches your PCB footprint requirements. Check manufacturer documentation for the latest RoHS status and lifecycle notifications before finalizing procurement plans.

Selection Notes

Select this component when a single-chip solution for isolated flyback conversion is required. Ensure the input voltage stays within the 3V to 20V range. Consider the thermal performance of the SOIC-8 package for your expected load conditions and ambient temperature environment.

Part Context

This part belongs to the LT1424 family of switching regulators. It serves as a complete power stage for flyback converters, combining the controller logic and power switch into one IC. This integration simplifies design compared to discrete solutions using separate controllers and MOSFETs.

Replacement Considerations

Consult Analog Devices official substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications carefully if considering competitors.