LM5111-1MX

Overview

The LM5111-1MX is a dual-channel, low-side compound gate driver manufactured by Texas Instruments. It integrates two independent drivers capable of sourcing and sinking peak currents of 5 A and 3 A respectively. The device operates within a supply voltage range of 3.5 V to 14 V and features an inverting logic configuration. Key electrical parameters include rise and fall times of 14 ns and 12 ns, with a functional operating temperature range from -40°C to +125°C. It is housed in an 8-pin SOIC package.

Feature Summary

• Integrates two independent low-side gate drivers for driving N-channel MOSFETs
• Provides high peak output current capability for fast switching transitions
• Features inverting logic input configuration for control interface compatibility

Applications

• Low-side switching applications in power conversion circuits
• Driving N-channel MOSFETs in synchronous buck converters
• General purpose gate driving for power management systems

Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm RoHS compliance and lead-free status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Confirm that the inverting logic configuration aligns with your system's control signal polarity before procurement.

Selection Notes

Select this component when a dual low-side driver with asymmetric current capabilities is required. The 5 A/3 A split allows optimized drive strength for different load conditions. Verify that the 3.5 V minimum supply voltage meets your system's lowest operating condition. Consider the 14 ns/12 ns transition times for EMI and switching loss trade-offs in your design.

Part Context

The LM5111 belongs to the LM5111 series of compound gate drivers from Texas Instruments. This series is designed for robust performance in industrial and automotive power electronics. The device serves as a direct interface between low-voltage logic controllers and high-power switching elements, simplifying circuit design by integrating necessary drive stages into a single compact package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Texas Instruments resources or authorized distributors for verified cross-reference data before substituting components.