LTC4261CUFD-2#TRPBF

Hot Swap Controllers Overview

The LTC4261CUFD-2#TRPBF is a negative voltage hot swap controller manufactured by Analog Devices Inc. It operates within a supply voltage range of -3V to -50V and features an integrated analog-to-digital converter (ADC) for monitoring input voltage, output current, and die temperature. The device utilizes an I2C-compatible serial interface for configuration and data retrieval. It is housed in a 24-lead QFN package with exposed paddle and supports operation across a temperature range of -40°C to +85°C.

Hot Swap Controllers Feature Summary

• Integrated ADC enables precise measurement of input voltage, output current, and internal die temperature without external sensing components.
• I2C-compatible serial interface allows for flexible system configuration, fault status reporting, and real-time parameter monitoring.
• Supports programmable soft-start timing and adjustable current limit thresholds to manage inrush current and protect downstream loads.

Hot Swap Controllers Applications

• Negative voltage power distribution systems
• Telecommunications equipment requiring -48V bus protection
• Industrial control systems with hot-swap capabilities

Hot Swap Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and feature set variations. Ensure compatibility with existing PCB footprints and thermal management requirements. Confirm RoHS compliance status through manufacturer declarations prior to integration into regulated assemblies.

Hot Swap Controllers Selection Notes

Select this component for applications requiring negative voltage hot swap protection with integrated monitoring. Compare performance against standard controllers if external ADC resources are limited. Evaluate thermal dissipation needs based on expected load currents and ambient operating conditions.

Hot Swap Controllers Part Context

This part belongs to the LTC4261 family of hot swap controllers designed for managing power insertion into live backplanes. It provides comprehensive protection against overvoltage, undervoltage, and short circuit conditions while enabling system-level diagnostics via digital interfaces.

Hot Swap Controllers FAQ

What is the function of the #TRPBF suffix?

The #TRPBF suffix indicates that the device is supplied in tape and reel packaging and is lead-free compliant.

How does the device handle fault conditions?

The controller monitors input voltage, output current, and die temperature, triggering protective actions such as shutting down the FET when limits are exceeded.