LT3430IFE#PBF

Overview

The LT3430IFE#PBF is a high voltage, step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range from 5.5 V to 60 V and delivers up to 3 A of output current. The device features a fixed internal switching frequency of 200 kHz and supports adjustable output voltages. It is housed in a 16-lead TSSOP package with an exposed pad for thermal management. The component functions within a temperature range of -40°C to +125°C and includes shutdown capability for power optimization.

Feature Summary

• Integrates a high-voltage N-channel power switch capable of handling input voltages up to 60 V
• Utilizes current-mode control architecture for fast transient response and inherent cycle-by-cycle current limiting
• Features a fixed 200 kHz switching frequency to minimize external passive component size
• Includes a shutdown pin that reduces supply current to less than 1 µA

Applications

• Industrial automation systems requiring isolated or non-isolated DC-DC conversion
• Distributed power architectures in telecom infrastructure
• Battery-powered equipment with wide input voltage ranges
• Automotive electronics operating on 12 V or 24 V bus systems

Procurement Notes

Verify the specific suffix and tape/reel versus tube packaging requirements against the official datasheet before ordering. Confirm that the supplier provides traceability documentation compliant with industry standards. Check for any recent product change notifications that may affect pinout or electrical characteristics. Ensure that the procurement channel is authorized to guarantee component authenticity and quality assurance.

Selection Notes

Select this component when a wide input voltage range exceeding standard 36 V regulators is required. Consider the thermal performance of the exposed pad package for high-current applications. Evaluate the 200 kHz frequency against EMI constraints and inductor size requirements. Compare the shutdown current specifications if low standby power consumption is critical for the system design.

Part Context

This part belongs to the LT3430 family of high voltage buck converters. It shares architectural similarities with other Analog Devices high-voltage regulators but is distinct in its fixed 200 kHz frequency and 3 A current rating. The family is designed for robust performance in harsh industrial and automotive environments where reliability under high stress conditions is paramount.

Replacement Considerations

LT3430IFE-1#PBF is a variant within the same series. Verify if the '-1' suffix indicates a specific binning or minor parameter variation rather than a functional difference. Cross-reference the footprint and pinout to ensure mechanical compatibility during replacement.