LT1424CN8-5#PBF

Overview

The LT1424CN8-5#PBF is an isolated flyback switching regulator manufactured by Analog Devices Inc. It operates with a maximum switching frequency of 310 kHz and accepts an input voltage range from 3 V to 20 V, typically centered at 5 V. The device provides a fixed 5 V output capable of delivering up to 400 mA. It utilizes current-mode control with pulse width modulation technology. The component is housed in an 8-pin PDIP package with a plastic body measuring 0.300 inches.

Feature Summary

• Integrated isolated flyback topology for galvanic isolation
• Current-mode control architecture for stable regulation
• Fixed 5 V output configuration
• Wide input voltage tolerance

Applications

• Isolated DC-DC power conversion systems
• Industrial control power supplies
• Telecommunications equipment power stages
• Medical device power modules

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance status against current manufacturer documentation. Confirm the CN8 package designation matches required thermal and mechanical constraints. Ensure the -5 variant corresponds to the necessary 5 V output specification for the target circuit design.

Selection Notes

Select this component when a fixed 5 V isolated output is required within a 3 V to 20 V input range. The PDIP-8 package suits through-hole assembly processes. Current-mode control offers robust transient response. Verify that the 400 mA output capability meets load requirements without exceeding thermal limits in the intended enclosure.

Part Context

This part belongs to the LT1424 family of isolated switching regulators designed for cost-effective power solutions. It integrates the controller and primary switch functions into a single monolithic IC. The family supports various output voltages, with the -5 suffix denoting the 5 V fixed version. It serves as a compact alternative to discrete transformer-based designs.

Replacement Considerations

LT1424CS8-5#PBF: SOIC-8 surface mount equivalent. LT1424IS8-5#TR: Industrial temperature grade SOIC-8 tape and reel.