LM5111-2MX/NOPB

Overview

The LM5111-2MX/NOPB is a dual-channel low-side MOSFET gate driver manufactured by Texas Instruments. It operates within a supply voltage range of 3.5 V to 14 V and supports logic input levels of 0.8 V (VIL) and 2.2 V (VIH). The device provides independent outputs with peak drive currents of 5 A source and 3 A sink. It features an inverting configuration with rise and fall times of 14 ns and 12 ns, respectively. The component is housed in an 8-SOIC package and functions reliably across a junction temperature range of -40°C to +125°C.

Feature Summary

• Dual independent low-side channel architecture for driving two N-channel MOSFETs simultaneously.
• Inverting logic configuration compatible with standard TTL or CMOS control signals.
• Robust output stage capable of delivering high peak current for rapid switching transitions.

Applications

• Low-side switching in DC-DC buck converter topologies
• Gate drive stages for synchronous rectification circuits
• General-purpose power management systems requiring isolated or non-isolated low-side control

Procurement Notes

Verify the complete part number including the suffix /NOPB to confirm lead-free compliance and specific tape-and-reel packaging specifications. Ensure the ordering code matches the exact SOIC-8 variant required for your PCB footprint. Cross-reference the manufacturer's latest datasheet revision to confirm pinout consistency and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel solution is required for cost-sensitive low-side applications. The 8-SOIC package offers a balance between thermal performance and board space efficiency compared to larger packages. Consider the 5A/3A drive capability against the total gate charge of the target MOSFETs to ensure adequate switching speed without excessive overshoot or ringing on the gate loop.

Part Context

This device belongs to the LM5111 series of compound gate drivers from Texas Instruments. The series focuses on providing reliable low-side drive solutions for industrial and consumer power supplies. The -2M designation specifically indicates the dual-channel variant in the SOIC-8 package, distinguishing it from single-channel or MSOP variants within the same family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative devices by comparing pin assignments, drive current capabilities, and operating voltage ranges against the original design requirements.