LM5110-3SDX/NOPB

Overview

The LM5110-3SDX/NOPB is a dual-channel low-side gate driver manufactured by Texas Instruments. It provides independent high-current drive for two N-channel MOSFETs with peak output currents of 5A and 3A respectively. The device operates within a supply voltage range of 3.5V to 14V and supports non-inverting logic inputs. It features negative output voltage capability to maintain MOSFET conduction during high dv/dt events. The component is housed in a 10-pin WSON package with an exposed pad and is rated for operation from -40°C to +125°C.

Feature Summary

• Dual-channel architecture providing independent control for separate low-side switches
• Negative output voltage capability to prevent false turn-on during fast switching transitions
• High peak current sourcing and sinking to ensure rapid MOSFET switching

Applications

• Synchronous buck converter designs requiring independent low-side drive
• Isolated power supply topologies utilizing external level shifting
• General-purpose low-side switching applications in industrial equipment

Procurement Notes

Verify the specific suffix '3' against official Texas Instruments documentation to confirm the exact channel current ratings, as variations exist within the family. Ensure the ordering part number matches the required tape-and-reel packaging configuration. Cross-reference the datasheet revision date to confirm compatibility with your design specifications before finalizing procurement.

Selection Notes

Select this component when independent control of two low-side switches is required without internal dead-time generation. It is suitable for applications where the controller handles timing and the driver provides necessary current amplification. Consider the thermal performance of the WSON package and the need for adequate PCB copper area for heat dissipation under continuous load conditions.

Part Context

This device belongs to the LM5110 family of compound gate drivers designed for robust low-side driving. Unlike integrated half-bridge drivers, it lacks internal bootstrap circuitry, requiring external components for high-side applications if used in such configurations. The family focuses on flexibility and noise immunity through negative voltage clamping capabilities.

Replacement Considerations

LM5110-3SD/NOPB is a direct pin-compatible alternative differing primarily in packaging format.