LM5110-3MX

Overview

The LM5110-3MX is a dual-channel low-side gate driver designed for high-performance power switching applications. It features asymmetric current drive capabilities, providing a 5-A sink and 3-A source output current to optimize switching speed and minimize cross-conduction risks. The device incorporates a dedicated input ground pin to isolate sensitive control logic from noisy power stages, enhancing signal integrity. It includes a 4-V under-voltage lockout (UVLO) threshold to prevent operation during insufficient supply conditions. The component operates within a junction temperature range of -40°C to 125°C and is housed in an 8-SOIC surface-mount package.

Feature Summary

• Asymmetric 5-A sink and 3-A source current capability reduces output current variation through compound CMOS and bipolar outputs.
• Dedicated input ground pin isolates the control interface from the power stage noise.
• Integrated 4-V under-voltage lockout ensures reliable operation by preventing partial turn-on during low supply voltages.

Applications

• Synchronous buck converter gate driving
• Half-bridge and full-bridge power stage control
• Isolated DC-DC converter interfaces

Procurement Notes

Verify the specific ordering suffix matches the required package variant and lead-free status. Confirm that the 8-SOIC footprint aligns with the target PCB layout dimensions. Ensure the supply voltage range supports the 4-V UVLO threshold for the intended application environment. Cross-reference the datasheet revision date to guarantee compatibility with current design specifications.

Selection Notes

Select this component when asymmetric drive strength is required to balance turn-on and turn-off speeds in synchronous rectification circuits. The dedicated input ground is critical for applications where common-mode noise could compromise control signals. Evaluate the thermal performance within the 8-SOIC package against the expected power dissipation levels in the final assembly.

Part Context

This part belongs to Texas Instruments' family of compound gate drivers designed for robust power management. It complements other low-side drivers by offering specialized asymmetric current handling. The LM5110 series targets applications requiring precise control over MOSFET or IGBT switching transitions while maintaining isolation between control and power domains.

Replacement Considerations

Direct substitutes include the LM5110-3MX/NOPB, which denotes the same functional specification with explicit compliance to non-halogenated manufacturing standards. Verify pin-out compatibility before swapping with other dual-channel gate drivers from different manufacturers.