LT1424CS8-5#TRPBF

Overview

The LT1424CS8-5#TRPBF is a high-efficiency isolated flyback switching regulator manufactured by Analog Devices Inc. It integrates the controller and power switch into a single SOIC-8 package, designed for applications requiring galvanic isolation. The device provides a fixed 5 V output with a maximum current capability of 400 mA. It operates from an input voltage range of 3 V to 18 V and features a low quiescent current of 7 mA. The component supports a wide operating temperature range from 0°C to +125°C and functions at a switching frequency of 285 kHz.

Feature Summary

• Integrates controller and power switch for compact isolated flyback designs
• Provides fixed 5 V regulated output suitable for standard logic levels
• Supports wide input voltage range for flexible power supply architectures
• Operates at high efficiency with low quiescent current consumption

Applications

• Isolated DC-DC conversion in industrial control systems
• Power supplies for communication equipment requiring galvanic isolation
• Embedded systems needing compact isolated power stages
• Battery-powered devices requiring efficient step-down conversion with isolation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the -5 variant corresponds to the fixed 5 V output requirement for your design. Check current availability status as distribution may be limited or subject to factory order constraints. Ensure the SOIC-8 thermal characteristics meet your board layout requirements.

Selection Notes

Select this component when a compact, integrated solution for isolated flyback conversion is required. It is suitable for designs needing a fixed 5 V output up to 400 mA with input voltages between 3 V and 18 V. Consider the 285 kHz switching frequency for filter component sizing. Verify that the 0°C to +125°C operating range aligns with your environmental specifications.

Part Context

This part belongs to the LT1424 series of isolated flyback switching regulators from Analog Devices. These components are designed to simplify the implementation of isolated power supplies by integrating necessary control and power elements. The series targets applications where space constraints and efficiency are critical, offering a complete solution in a small surface-mount package.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.