LM5110-1MX

Overview

The LM5110-1MX is a dual 5-A compound gate driver designed for high-speed switching applications. It integrates a low-side driver with negative input voltage capability and a high-side driver with bootstrap operation. The device supports supply voltages from 3.5 V to 14 V and operates within a temperature range of -40°C to +125°C. Key electrical parameters include a peak output current of 5 A, propagation delay of 25 ns, and rise/fall times of 14 ns/12 ns. It is housed in an 8-pin SOIC package.

Feature Summary

• Integrates a low-side driver capable of handling negative input voltages relative to the source terminal.
• Includes a high-side driver utilizing bootstrap technology for floating supply generation.
• Provides robust 5-A peak output current drive capability for fast MOSFET switching.
• Features internal pull-down resistors to ensure defined off-states during power-up.

Applications

• Synchronous buck converters
• Half-bridge and full-bridge topologies
• Motor control systems

Procurement Notes

Verify the specific suffix (e.g., NOPB) against the datasheet to confirm lead-free status and RoHS compliance. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the manufacturer's latest documentation to confirm active production status and any recent design changes or obsolescence notices before finalizing procurement.

Selection Notes

Select this component when negative input voltage tolerance on the low-side channel is required. Compare propagation delays and peak current capabilities against alternative drivers if higher speed or current is needed. Verify that the bootstrap circuit design aligns with the driver's internal architecture and operating frequency requirements for reliable high-side performance.

Part Context

The LM5110 belongs to Texas Instruments' family of compound gate drivers, which combine low-side and high-side functions in a single package. This integration reduces board space and simplifies design compared to using separate discrete drivers. The series targets efficient power conversion solutions requiring compact footprints and synchronized switching control.

Replacement Considerations

The LM5111 is a similar compound gate driver but lacks the negative input voltage capability found in the LM5110. Verify interface compatibility and voltage tolerances before substitution. Other alternatives may require external bootstrap diodes or different control logic levels.