LM5069MMX-1

Hot Swap Controllers Overview

The LM5069MMX-1/NOPB is a positive hot swap controller designed for intelligent power supply connection management during circuit card insertion and removal. It operates within a wide voltage range of 9 V to 80 V and features adjustable current limiting and programmable maximum power dissipation in the external pass device. The component includes an internal high-side charge pump and gate driver for external N-channel MOSFETs, ensuring operation within the Safe Operating Area (SOA). It offers adjustable undervoltage lockout (UVLO), overvoltage lockout (OVLO), initial insertion delay, and fault detection timers. The device latches off after a fault detection event.

Hot Swap Controllers Feature Summary

• Provides in-rush current control to limit system voltage droop and transients during board insertion into live power sources.
• Features programmable maximum power dissipation and adjustable current limit circuit breaker function for severe overcurrent events.
• Includes an internal high-side charge pump and gate driver specifically designed for external N-channel MOSFETs.
• Offers adjustable UVLO, OVLO, hysteresis, initial insertion timer, and fault detection time to avoid nuisance trips.

Hot Swap Controllers Applications

• Control of power supply connections during insertion and removal of circuit cards from live system backplanes.
• Hot swap applications requiring safe board insertion into live power sources with in-rush current limiting.
• General purpose hot swap controller implementations requiring latch-off fault protection.

Hot Swap Controllers Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm functional differences, as the -1 variant indicates a latched fault response compared to other versions. Ensure the ordering part number matches the exact package and temperature grade requirements. Cross-reference the datasheet revision history for any changes in electrical characteristics or pinout configurations before finalizing procurement specifications.

Hot Swap Controllers Selection Notes

Select this component when a latched fault response is required rather than automatic restart, distinguishing it from the LM5069-2 variant. Consider the 9 V to 80 V operating range and the need for external N-channel MOSFET drive capabilities. Evaluate the programmability of UVLO, OVLO, and fault timers against system transient immunity requirements. Confirm compatibility with the 10-pin VSSOP package constraints for the target PCB layout.

Hot Swap Controllers Part Context

The LM5069 series serves as a positive hot swap and inrush current controller family from Texas Instruments. The LM5069MMX-1/NOPB belongs to the LM5069 series, differentiated by its latched fault behavior upon detection of an error condition. This contrasts with the LM5069-2 version which automatically restarts at a fixed duty cycle. The MMX suffix denotes the tape and reel packaging format for surface-mount assembly.

Hot Swap Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Designers should consult the official Texas Instruments product selection guide for alternative devices within the hot swap controller portfolio that match specific voltage, current, and fault response requirements.