LT1424IN8-5#PBF

Overview

The LT1424IN8-5#PBF is an isolated flyback switching regulator manufactured by Analog Devices. It integrates a 310 kHz current-mode controller with a fixed 5 V output, designed for applications requiring galvanic isolation. The device operates from a 3 V to 20 V input range and delivers up to 400 mA of output current. Packaged in an 8-pin PDIP, it provides a compact solution for generating isolated power rails in industrial and communication systems.

Feature Summary

• Integrated isolated flyback topology providing galvanic separation between input and output circuits
• Fixed 5 V regulated output voltage simplifies design for standard logic supply requirements
• Current-mode control architecture ensures stable operation across varying load conditions

Applications

• Industrial control systems requiring isolated sensor interfaces
• Telecommunications equipment needing isolated power distribution
• Medical instrumentation demanding safety-certified isolated power supplies

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature rating. Ensure the component matches the required isolation specifications for your application. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a fixed 5 V isolated output is required without external feedback network adjustments. Consider the PDIP package constraints for thermal management and board space. Evaluate the 310 kHz switching frequency against EMI requirements and transformer size limitations for the target design.

Part Context

This part belongs to the LT1424 family of isolated switching regulators. It shares functional similarities with other variants like the LT1424IS8-5 but differs in packaging and operating temperature range. The family targets applications where small form factor and reliable isolation are critical for system integrity.

Replacement Considerations

LT1424CN8-5#PBF: Similar DIP-8 package but may differ in temperature range or performance specs. LT1424IS8-5#PBF: SOIC-8 surface mount alternative; verify pinout compatibility and thermal dissipation differences.