LM5069MMX-1/NOPB

Hot Swap Controllers Overview

The LM5069MMX-1/NOPB is a positive hot swap voltage controller manufactured by Texas Instruments, designed for intelligent control of power supply connections during circuit card insertion or removal from live backplanes. It operates within a wide input voltage range of 9 V to 80 V and features an adjustable current limit with a circuit breaker function for severe overcurrent events. The device includes programmable maximum power dissipation in the external pass device to ensure operation within the Safe Operating Area (SOA). It utilizes an internal high-side charge pump and gate driver for external N-channel MOSFETs. The component provides an active high open-drain POWER GOOD output and supports adjustable undervoltage lockout (UVLO) and overvoltage lockout (OVLO) levels with hysteresis.

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 a latched fault response mechanism that shuts off after fault detection occurs
• Includes programmable initial insertion timer to allow ringing and transients to subside after system connection

Hot Swap Controllers Applications

• Control of power supply connections during insertion and removal of circuit cards from live system backplanes
• Hot swapping applications requiring intelligent management of external series pass N-Channel MOSFETs
• Systems necessitating precise in-rush current limiting to prevent voltage droop on live power sources

Hot Swap Controllers Procurement Notes

Verify the specific suffix configuration when ordering, as the LM5069 family offers distinct operational behaviors. The '-1' variant indicates a latched fault response, whereas other suffixes may provide automatic restart capabilities. Confirm package type compatibility and ensure the design accounts for the fixed duty cycle restart if selecting alternative versions. Cross-reference datasheet specifications against application requirements to select the correct part number variant.

Hot Swap Controllers Selection Notes

Select the LM5069MMX-1/NOPB when a latched fault response is required following a detected error condition. This variant ensures the controller remains off until manually reset, providing a distinct safety profile compared to automatic restart versions. Consider the external N-channel MOSFET requirements and verify that the internal charge pump adequately drives the selected device. Ensure the programming components for UVLO, OVLO, and current limits align with the specific system voltage and protection thresholds.

Hot Swap Controllers Part Context

The LM5069 belongs to a family of positive hot swap controllers designed for managing power delivery in modular systems. It integrates essential protection features such as in-rush current limiting and SOA protection for external pass devices. The family distinguishes between latched fault behavior and automatic restart modes based on the model suffix. Available in compact packages like the 10-pin VSSOP, it supports various industrial and commercial temperature ranges suitable for demanding electronic environments.

Hot Swap Controllers Replacement Considerations

LM5069MM-1/NOPB serves as a direct equivalent with identical electrical characteristics and latched fault functionality. Both variants share the same core controller architecture and pinout configuration. Verify that any substitute maintains the 9 V to 80 V operating range and compatible package dimensions. Ensure the replacement part retains the specific '-1' designation to preserve the latched shutdown behavior required by the design.