LM5111-2M/NOPB

Overview

The LM5111-2M/NOPB is a dual low-side MOSFET gate driver from Texas Instruments, housed in an 8-pin MSOP PowerPAD package. It provides independent inverted outputs with a peak output current of 5 A per channel. The device operates within a supply voltage range of 3.5 V to 14 V and supports logic input levels compatible with TTL standards. Key timing characteristics include a rise time of 14 ns and a fall time of 12 ns. It functions reliably across an extended junction temperature range of -40°C to +125°C.

Feature Summary

• Dual-channel architecture delivering independent low-side drive signals for synchronous rectification or half-bridge applications.
• High peak source and sink current capability ensures rapid switching transitions and efficient power stage control.
• Integrated overvoltage protection safeguards the internal circuitry against excessive supply voltage conditions.

Applications

• Synchronous buck converter topologies requiring precise low-side MOSFET control
• Half-bridge and full-bridge power conversion circuits
• Industrial motor drive systems utilizing external N-channel MOSFETs

Procurement Notes

Verify the specific suffix '2M' against the manufacturer's latest datasheet to confirm pinout and functional configuration, as suffixes often denote package variations or revision changes. Ensure the NOPB designation confirms lead-free and RoHS compliance status prior to final procurement approval.

Selection Notes

Select this component when a compact dual low-side driver with high peak current is required. The MSOP PowerPAD package offers thermal performance advantages for space-constrained designs. Verify that the 5 A output current meets the gate charge requirements of the target MOSFETs at the intended operating frequency.

Part Context

This part belongs to the LM5111 family of compound gate drivers designed for robust power management applications. The series focuses on providing reliable driving capabilities for external N-channel MOSFETs in various DC-DC converter architectures, emphasizing simplicity and high performance in small form factors.

Replacement Considerations

Check for LM5111 variants with different package options such as SOIC-8 (e.g., LM5111-2MX/NOPB) if pin compatibility allows. Verify electrical specifications match exactly before substituting, particularly regarding output current and propagation delay times.