LT3430EFE-1#PBF

Overview

The LT3430EFE-1#PBF is a high-voltage step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 5.5 V to 60 V and delivers up to 3 A of output current. The device features a fixed 200 kHz switching frequency and supports adjustable output voltages starting from 1.219 V. It utilizes a TSSOP-EP-16 package for surface mount installation and includes a shutdown function. The component is rated for junction temperatures between 0°C and 125°C.

Feature Summary

• Integrated high-side N-channel power switch capable of delivering 3 A continuous current
• Fixed 200 kHz switching frequency minimizes external component size
• Supports buck and SEPIC topologies for flexible input-output configurations
• Includes thermal shutdown and cycle-by-cycle current limiting protection

Applications

• Industrial control systems requiring isolated or non-isolated DC-DC conversion
• Automotive electronics operating within wide input voltage ranges
• Point-of-load regulation in distributed power architectures
• Battery-powered equipment needing efficient step-down conversion

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the -1 variant designation matches the required internal reference voltage or pinout configuration. Check current availability status as supply may be limited. Ensure the TSSOP-EP-16 footprint aligns with the target PCB layout requirements.

Selection Notes

Select this component when a robust, high-voltage buck converter is needed without synchronous rectification. The fixed 200 kHz frequency offers a balance between efficiency and component size. Consider the thermal performance of the exposed pad package for high-current applications. Verify that the non-synchronous design meets the cost and complexity constraints of the system.

Part Context

This part belongs to the LT3430 family of high-voltage switching regulators. It shares architectural similarities with other LT343x devices but is distinguished by its specific output configuration and package type. The series is designed for applications requiring reliable power conversion from high-voltage sources such as automotive batteries or industrial bus lines.

Replacement Considerations

LT3430EFE#TRPBF serves as a tape-and-reel alternative to the tube-packaged version. LT3430IFE-1#PBF is a similar variant in a different package format. Cross-reference datasheets to ensure pin compatibility and electrical specifications match before substitution.