LTC4217HFE#PBF

Hot Swap Controllers Overview

The LTC4217HFE#PBF is a single-channel hot swap controller manufactured by Analog Devices Inc., designed for safe insertion and removal of boards from live backplanes. It integrates a 33mΩ N-channel MOSFET with an on-board sense resistor, eliminating the need for external current-sensing components. The device supports a wide operating voltage range from 2.9V to 26.5V and features programmable current limiting and soft-start capabilities. Packaged in a 20-lead TSSOP with exposed pad (TSSOP-EP), it operates within a temperature range of -40°C to +85°C and draws a typical supply current of 1.6mA.

Hot Swap Controllers Feature Summary

• Integrates a low-resistance 33mΩ power MOSFET with an onboard current sense resistor to minimize component count and board space.
• Provides comprehensive protection mechanisms including adjustable current limit, thermal shutdown, and undervoltage lockout for reliable system operation.
• Supports flexible configuration through programmable soft-start timing and fault response options via external RC networks.

Hot Swap Controllers Applications

• Server and storage backplane card insertion
• Telecommunications equipment hot swapping
• Industrial control module replacement

Hot Swap Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free RoHS compliance when ordering. Confirm the package type matches the 20-TSSOP-EP footprint requirements for your PCB layout. Ensure the operating voltage range aligns with your system's bus specifications before finalizing procurement.

Hot Swap Controllers Selection Notes

Select this component when a compact, integrated solution for single-rail hot swap applications is required. It is suitable for systems needing built-in current sensing without external shunt resistors. Consider alternative models if multiple channels or different voltage ranges are necessary.

Hot Swap Controllers Part Context

This part belongs to the LTC4217 family of hot swap controllers, which are engineered for high-reliability applications requiring robust power management during live connections. The HFE variant specifically denotes the TSSOP-EP package option, offering improved thermal performance compared to standard packages.

Hot Swap Controllers Replacement Considerations

Direct substitutes include other LTC4217 variants such as LTC4217IDHC#PBF or LTC4217IFE#PBF, depending on the required package style. Verify pin compatibility and electrical specifications before substituting to ensure seamless integration.