MAX5902AAETT+T

Hot Swap Controllers Overview

The MAX5902AAETT+T is a hot-swap voltage controller from the Simple Swapper family, designed for safe insertion and removal of circuit cards into live backplanes. It operates with negative supply voltages ranging from -9V to -100V. The device controls an external N-channel MOSFET to limit inrush current during startup and provides adjustable overcurrent protection. Packaged in a compact 6-lead TDFN (HVSON) surface-mount format, it eliminates the need for discrete components typically required in relay-based protection circuits.

Hot Swap Controllers Feature Summary

• Provides controlled inrush current limiting during power-up to prevent voltage glitches on the bus
• Features adjustable circuit-breaker functionality for precise overcurrent protection
• Operates directly from negative supply rails without requiring additional level-shifting components

Hot Swap Controllers Applications

• Telecommunications equipment requiring safe board insertion into active backplanes
• Industrial control systems utilizing high-voltage negative power distribution
• Network infrastructure hardware needing robust power sequencing and fault isolation

Hot Swap Controllers Procurement Notes

Verify the specific suffix 'AA' against the manufacturer's official part numbering guide, as standard variants often use 'NN' or 'AB'. Confirm RoHS compliance status and lead-free designation through the latest datasheet revision. Check for obsolescence notices or last-time-buy dates, as older Maxim Integrated PMICs may have limited availability or replacement recommendations.

Hot Swap Controllers Selection Notes

Select this component when designing systems with negative supply rails between -9V and -100V that require simple, component-minimal hot-swap protection. Ensure the external N-channel MOSFET selected can handle the maximum expected load current and voltage stress. Verify that the application does not require internal switching, as this controller relies entirely on external pass elements for power delivery.

Hot Swap Controllers Part Context

This part belongs to the MAX5900/MAX5901/MAX5902 series of Simple Swapper controllers. While the MAX5900/01 support up to -100V, the MAX5902 variant typically supports up to -72V. The 'AA' package code indicates a specific thermal and mechanical configuration within the TDFN family, distinct from the SOT23-6 packages used by other series members like the MAX5902NNEUT.

Hot Swap Controllers Replacement Considerations

Direct substitutes include MAX5900ABETT+T for higher voltage tolerance (-100V) or MAX5902ABEUT+T if SOT23-6 packaging is preferred. For positive voltage applications, consider the ADM1273 or LTC4287 families. Always verify pinout compatibility and thermal performance before swapping.