LTC4249AV-2#PBF

Overview

The LTC4249AV-2#PBF is a dual hot-swap controller designed for high-voltage applications, supporting input voltages up to 65V. It integrates two independent channels with adjustable current limiting and foldback protection. The device features programmable power limit control and fault timeout logic. It operates within an ambient temperature range of -40°C to +85°C. The component is housed in a thermally enhanced 16-lead SSOP package. Official documentation specifies its classification as a professional power management IC.

Feature Summary

• Dual-channel architecture providing independent hot-swap control for separate circuit rails
• Integrated adjustable current limiting with foldback protection to manage inrush currents
• Programmable power limit control allowing precise regulation of maximum power dissipation

Applications

• High-voltage backplane systems requiring redundant power paths
• Industrial equipment needing safe insertion and removal under load
• Telecommunications infrastructure utilizing 48V or higher DC distribution

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm voltage rating and package type. Confirm availability status through authorized distributors as supply may be limited. Ensure compatibility with system thermal requirements given the SSOP package constraints. Cross-reference pinout diagrams with PCB layout specifications prior to implementation.

Selection Notes

Select this component when dual isolated hot-swap channels are required for voltages exceeding standard low-voltage limits. Evaluate the need for integrated power limiting versus external solutions. Consider the thermal performance of the SSOP package relative to expected load currents. Verify that the fault timeout parameters align with system safety requirements.

Part Context

This part belongs to the LTC4249 family of hot-swap controllers from Analog Devices. It is distinct from lower-voltage variants and single-channel models within the broader portfolio. The series focuses on robust protection for high-voltage industrial and telecom environments. Related components may offer different channel counts or voltage ratings.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Direct replacements must match the 65V rating and dual-channel configuration. Generic hot-swap controllers may not provide equivalent foldback characteristics.