LM5106MM

Overview

The LM5106MM is a high-voltage half-bridge gate driver designed for synchronous buck or half-bridge configurations. It drives high-side and low-side N-channel MOSFETs with a floating high-side driver supporting up to 100V rail voltage. Key electrical parameters include a peak output sink current of 1.8A and a peak output source current of 1.2A. The device features a single TTL-compatible control input and programmable turn-on delay for dead-time setting via an external resistor. Propagation delay is typically 32ns, with rise and fall times of 15ns and 10ns respectively when driving a 1000pF load. Undervoltage lockout (UVLO) disables the driver if supply voltages fall below thresholds.

Feature Summary

• Drives high-side and low-side N-channel MOSFETs in half-bridge or synchronous buck topologies
• Single TTL-compatible input with programmable dead-time using one external resistor
• Robust level-shifting technology enables fast switching with clean output transitions
• Undervoltage lockout protects against insufficient bootstrap or low-side power supplies

Applications

• Synchronous buck converter applications
• Half-bridge power stage driving
• High-voltage motor drive systems
• Industrial power supply designs

Procurement Notes

Verify the specific ordering suffix to ensure package compatibility, as the LM5106MM denotes a VSSOP-10 package. Confirm that the component meets RoHS standards if required by your assembly process. Cross-reference the datasheet revision date to ensure alignment with your design specifications. Ensure that the supplier provides genuine Texas Instruments products to avoid counterfeit risks associated with power management ICs.

Selection Notes

Select this component when a robust half-bridge driver with integrated dead-time programming is required. The LM5106MM is suitable for applications needing high peak currents to charge/discharge MOSFET gates rapidly. Consider the VSSOP-10 package constraints regarding thermal dissipation and board space. Verify that the input signal levels are compatible with the TTL threshold requirements for reliable operation.

Part Context

The LM5106 belongs to Texas Instruments' family of high-voltage gate drivers. It is functionally similar to the LM5105 but offers specific current drive capabilities tailored for certain power stages. The MM suffix indicates the VSSOP-10 plastic package variant. Other variants like LM5106MMX/NOPB exist with different packaging or tape-and-reel options.

Replacement Considerations

The LM5105 serves as a functional alternative within the same family. Check pin compatibility and current drive specifications before substitution. Ensure that the replacement part supports the required bus voltage and dead-time programming methods.