MAX5902ACEUT

Hot Swap Controllers Overview

The MAX5902ACEUT+T is a hot-swap controller from the Simple Swapper series, designed for safe insertion of circuit cards into live backplanes. It operates within a supply voltage range of +9V to +72V and features an SOT-23-6 surface-mount package. The device provides inrush current limiting and overcurrent protection with adjustable thresholds. It includes programmable undervoltage lockout (UVLO) and thermal limiting capabilities. Operating temperatures span from -40°C to +85°C, supporting network applications without requiring internal switches.

Hot Swap Controllers Feature Summary

• Eliminates external components except the external P-channel MOSFET for simplified hot-swap implementation
• Provides circuit-breaker function for overcurrent protection during steady-state operation
• Includes thermal limiting to protect against overheating conditions

Hot Swap Controllers Applications

• Network equipment hot-plug protection
• Live backplane circuit card insertion
• Power-supply sequencing improvement

Hot Swap Controllers Procurement Notes

Verify the exact suffix configuration when ordering, as variations such as NNEUT or LAEUT may exist within the family. Confirm RoHS compliance status (+ suffix) and packaging type (TR/CT/DKR) with the distributor. Check for obsolescence notices on specific sub-models like NNETT. Ensure the selected variant matches the required operating temperature range and package dimensions for your PCB layout.

Hot Swap Controllers Selection Notes

Select this component for applications requiring robust hot-swap control without internal switching elements. The device supports voltages up to 72V, making it suitable for higher-voltage bus systems. Consider the SOT-23-6 footprint constraints and the necessity of an external P-channel MOSFET. Verify that the adjustable UVLO and current limit settings align with the target system's power rail specifications and fault tolerance requirements.

Hot Swap Controllers Part Context

This part belongs to the MAX5902/MAX5903 Simple Swapper family, which simplifies hot-swap design by minimizing external component count. Unlike integrated switch solutions, these controllers require an external MOSFET, offering flexibility in current handling capabilities. The family is widely used in telecommunications and industrial networking infrastructure to prevent power rail glitches during module insertion.

Hot Swap Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.