LM5069MMX-2

Hot Swap Controllers Overview

The LM5069MMX-2/NOPB is a positive high-voltage hot swap controller designed for intelligent management of power supply connections during circuit card insertion and removal from live backplanes. It features an adjustable current limit, programmable maximum power dissipation to ensure Safe Operating Area (SOA) compliance, and automatic restart functionality after fault detection. The device operates within a wide voltage range of 9 V to 80 V, with a typical quiescent current of 1.3 mA. It includes internal high-side charge pump and gate driver capabilities for external N-channel MOSFETs, alongside programmable UVLO, OVLO, and fault timers.

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 functions to protect the external pass device.
• Includes an active high open-drain POWER GOOD output indicating when the output voltage is within 1.25 V of the input voltage.
• Supports automatic restart at a fixed duty cycle following fault detection, distinct from the latched-off behavior of other variants.

Hot Swap Controllers Applications

• Hot swapping circuit cards into live system backplanes
• Managing power supply connections in telecommunications infrastructure
• Protecting high-side N-channel MOSFETs in industrial power distribution systems

Hot Swap Controllers Procurement Notes

Verify that the specific suffix '2' corresponds to the automatic restart variant, as opposed to the '1' variant which latches off. Confirm the package designation matches the required MSOP-10 form factor. Ensure compatibility with the intended external N-channel MOSFET gate drive requirements. Check RoHS compliance status if restricted substances are mandated by the end product specifications.

Hot Swap Controllers Selection Notes

Select this component when automatic recovery from overcurrent or power limit faults is required without manual intervention. Choose the LM5069MMX-2/NOPB for applications requiring a wide input voltage range up to 80 V. Consider the internal charge pump capability for driving external MOSFETs efficiently. Evaluate the need for programmable fault timers to avoid nuisance trips in noisy environments compared to fixed-timer alternatives.

Hot Swap Controllers Part Context

This part belongs to the LM5069 series of positive hot swap controllers manufactured by Texas Instruments. It is specifically the version configured for automatic restart behavior upon fault clearance. The series is categorized under PMIC - Power Management ICs, focusing on Controllers & Switches for robust power delivery protection in high-voltage environments.

Hot Swap Controllers Replacement Considerations

The LM5069MM-2/NOPB serves as a direct pin-compatible alternative offering identical automatic restart functionality. Verify that any substitute maintains the same 10-VSSOP package dimensions and electrical characteristics for seamless integration into existing designs.