Half-bridge driver for 3A-class N-Channel stages
The Texas Instruments LM5100AMRX/NOPB is a high-voltage half-bridge gate driver designed to drive two N-Channel MOSFETs in an independent-channel configuration. It delivers a peak output current of 3A source and 3A sink, making it suited for medium-power DC-DC converters, motor drive inverter stages, and class-D audio amplifiers where the bootstrap supply can reach up to 118 V. The supply range of 9 V to 14 V aligns with standard industrial bias rails, and the junction temperature rating of -40°C to 125°C covers both outdoor telecom enclosures and under-hood automotive environments when the thermal profile allows.
Switching speed and dead-time planning
Typical rise time of 430 ns and fall time of 260 ns. The 3A peak drive provides gate charge delivery for larger-die MOSFETs.
Package and mounting notes
Housed in an 8-PowerSOIC package (0.154" body width, 3.90 mm) with an exposed PowerPad on the underside. The PowerPad must be soldered to a suitable copper plane on the PCB for thermal relief.
Lifecycle and sourcing posture
The part is available through independent distribution channels and is sourced to order against an RFQ.