LM5111-2MX

Overview

The LM5111-2MX/NOPB is a dual-channel low-side MOSFET gate driver from Texas Instruments, housed in an 8-pin SOIC package. It provides independent high-current drive for two N-channel MOSFETs with peak output currents of 5 A and 3 A respectively. The device operates on a supply voltage range of 3.5 V to 14 V and features inverted logic inputs. Key timing characteristics include rise and fall times of 14 ns and 12 ns. It supports a wide operating temperature range from -40°C to +125°C TJ.

Feature Summary

• Dual independent channel configuration for driving two separate low-side MOSFETs
• High peak output current capability to ensure fast switching transitions
• Inverted logic input interface compatible with standard control signals
• Robust thermal performance supporting extended industrial temperature ranges

Applications

• Low-side switching in DC-DC converter topologies
• Motor control circuits requiring independent phase drive
• Power supply designs utilizing external N-channel MOSFETs

Procurement Notes

Verify the complete part number includes the suffix /NOPB for lead-free compliance when ordering. Confirm the specific package variant matches the design requirements, as the base model may have different packaging options. Ensure the supplier provides official datasheets to validate electrical specifications against the target application constraints before finalizing procurement.

Selection Notes

Select this component for applications requiring dual low-side drive with asymmetric current capabilities. The 5 A/3 A output split allows optimization for different load conditions. Verify that the input signal polarity aligns with the inverted logic configuration. Consider the 8-pin SOIC footprint for PCB layout compatibility and thermal dissipation needs within the specified operating temperature range.

Part Context

This device belongs to the LM5111 series of gate drivers designed for efficient power management. It serves as a dedicated interface between low-voltage control logic and high-power MOSFET switches. The series focuses on providing reliable switching performance in compact packages suitable for modern power electronics designs.

Replacement Considerations

Check for direct substitutes within the same family or comparable dual-channel low-side drivers from other manufacturers. Ensure pinout compatibility and electrical parameters such as peak current and supply voltage range match the existing design requirements.