LM5068MMX-1/NOPB

Hot Swap Controllers Overview

The LM5068MMX-1/NOPB is a negative voltage hot swap controller designed for backplane insertion and removal of powered circuit cards. It operates within a supply voltage range of -90V to -10V. The device features adjustable in-rush current limiting to ensure safe board insertion into live systems. It is housed in an 8-pin VSSOP package and supports surface mount installation. The component functions as a single-channel controller with no internal switch, requiring an external N-channel MOSFET.

Hot Swap Controllers Feature Summary

• Provides controlled power supply connections during the insertion and removal of circuit cards from live backplanes
• Includes programmable in-rush current limiting to prevent system disturbances during board insertion
• Supports negative voltage operation for high-voltage backplane applications

Hot Swap Controllers Applications

• Backplane insertion and removal control for powered circuit cards
• In-rush current limiting for safe board insertion into live systems
• Negative voltage hot swap management in industrial or telecom equipment

Hot Swap Controllers Procurement Notes

Verify the specific suffix (e.g., MMX vs MM) matches the required tape-and-reel packaging configuration. Confirm the -1 variant aligns with the intended pinout and feature set compared to other LM5068 variants. Ensure the external N-channel MOSFET selection meets the -90V to -10V operating range requirements. Check RoHS compliance documentation if restricted substance regulations apply to the final assembly.

Hot Swap Controllers Selection Notes

Select this component when managing negative voltage backplanes requiring controlled insertion and removal. It is suitable for applications needing adjustable in-rush current limiting without an integrated switch. Consider the 8-pin VSSOP package for space-constrained designs. Evaluate the need for external MOSFET drive capabilities against the controller's output specifications.

Hot Swap Controllers Part Context

This part belongs to the LM5068 family of negative voltage hot swap controllers from Texas Instruments. It is functionally similar to the LM5068MM-4/NOPB and LM5068MMX-2/NOPB but may differ in specific pin configurations or feature sets associated with the numeric suffix. These controllers are designed for robust power management in high-voltage environments.

Hot Swap Controllers Replacement Considerations

The LM5068MM-4/NOPB and LM5068MMX-2/NOPB are related parts within the same family. Verify pin compatibility and feature parity before substitution, as suffixes often indicate distinct electrical characteristics or package variations rather than direct drop-in replacements.