Product Overview: LM5067MM-2 Negative Hot Swap / Inrush Current Controller

The LM5067MM-2 from Texas Instruments is a highly integrated negative voltage hot swap controller designed to allow boards to be safely inserted and removed from live backplanes. Operating with supply voltages ranging from -9V to -80V, the LM5067MM-2 is a versatile solution for managing inrush current in a variety of systems, including telecom, datacom, and industrial applications.

Featuring an intelligent gate driver for an external N-channel MOSFET, the LM5067MM-2 provides smooth control of the load current during insertion of a circuit board into a live backplane or during hot-swap events. The gate driver ensures that the MOSFET remains in the safe operating area (SOA) by controlling the gate voltage in response to the load current and source-to-drain voltage.

The device includes a programmable under-voltage lockout (UVLO) with hysteresis and an over-current fault detection that is adjustable using an external resistor. The LM5067MM-2 also provides a circuit breaker function with adjustable trip delay to protect the system from prolonged over-current conditions. In addition, a power good (PG) indicator offers real-time status feedback, while an internal charge pump ensures that the gate of the external MOSFET can be fully enhanced even during low input voltage conditions.

The LM5067MM-2 is available in an MSOP-10 PowerPAD™ package, which enhances thermal performance and allows for compact PCB designs. Its features include a dV/dt controlled turn-on, an internal timer for programmable circuit breaker functionality, and a flag output that indicates fault conditions. Furthermore, the LM5067MM-2 supports a temperature range of -40°C to +125°C, ensuring reliable operation in harsh environments.

With its comprehensive protection features and robust design, the LM5067MM-2 is an ideal choice for systems that require reliable negative voltage hot swap capabilities. Its ability to manage power distribution and protect sensitive electronic components from voltage and current transients makes it a valuable component in advanced electronic systems.