LT1641-1IS8#TRPBF

Hot Swap Controllers Overview

The LT1641-1IS8#TRPBF is a positive high voltage hot-swap controller manufactured by Analog Devices Inc. It operates within an input voltage range of 9V to 80V and features a single channel in an 8-SOIC package. Key electrical parameters include a supply current of 2mA, a maximum operating temperature of 85°C, and a minimum of -40°C. The device supports programmable current limiting with foldback, overvoltage protection, undervoltage lockout, and slew rate control. It offers automatic retry or latch modes upon fault detection.

Hot Swap Controllers Feature Summary

• Programmable foldback current limiting dynamically adjusts sense resistor voltage drop to reduce power dissipation during faults.
• Integrated timer allows setting maximum current limit duration via external capacitor for precise fault handling.
• High-side driver provides sufficient gate drive voltage for standard N-channel MOSFETs.
• Supports both automatic retry and latch modes for flexible fault recovery strategies.

Hot Swap Controllers Applications

• Electronic circuit breakers
• Industrial alarm systems
• Power module protection

Hot Swap Controllers Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing. Confirm the -1 variant designation matches the required latch functionality. Ensure the 8-SOIC footprint aligns with the PCB layout. Check RoHS compliance status for environmental regulations. Validate the manufacturer source to avoid counterfeit components.

Hot Swap Controllers Selection Notes

Select this component for applications requiring robust protection against inrush currents and short circuits in high-voltage environments. The programmable features allow customization for specific load requirements. Consider the thermal performance and package size for space-constrained designs. Evaluate the need for automatic retry versus latch behavior based on system reliability goals.

Hot Swap Controllers Part Context

This part belongs to the LT1641 family of hot-swap controllers designed for safe insertion and removal of boards from live backplanes. It addresses common issues in 24V and 48V systems by controlling power-up sequences and protecting against electrical faults. The series is widely used in industrial and telecommunications equipment for reliable power management.

Hot Swap Controllers Replacement Considerations

LT1641-2IS8#PBF: Similar hot-swap controller but may differ in packaging or specific feature set; verify compatibility.

Hot Swap Controllers FAQ

What is the function of the -1 suffix in LT1641-1?

The -1 suffix typically denotes a specific variant within the LT1641 family, often associated with latch mode operation or specific pin configurations as defined in the datasheet.

How does the foldback current limiting work?

It dynamically reduces the current limit threshold as the output voltage drops during a fault, minimizing power dissipation in the sense resistor and MOSFET.