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Texas Instruments LM5100AMRX/NOPB — Power Management (PMIC / Gate Driver)

LM5100AMRX/NOPB Gate Driver, 3A Half-Bridge, 118V Bootstrap

MPNLM5100AMRX/NOPB
End of Life

Texas Instruments LM5100AMRX/NOPB, half-bridge gate driver, N-Channel MOSFET, 3A peak source/sink, 9V-14V supply, 118V bootstrap, 8-PowerSOIC, -40 to 125°C.

$1.96Ref. price · indicative, final on quote
Texas Instruments LM5100AMRX/NOPB datasheet (PDF)
Packaging8-PowerSOIC (0.154", 3.90mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM5100AMRX/NOPB specifications
ParameterValue
Gate typeN-Channel MOSFET
Input typeNon-Inverting
Channel typeIndependent
MountingSurface Mount
Supply voltage9V ~ 14V
Logic voltage - VIL, VIH2.3V, -
High side voltage - max (Bootstrap)118 V
Current - peak output (Source, sink)3A, 3A
Operating temperature-40°C ~ 125°C (TJ)
PackageBulk
Case8-PowerSOIC (0.154\", 3.90mm Width)
Number of drivers2
Driven configurationHalf-Bridge
Rise (Fall time)430ns, 260ns

Product details

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.

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.

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.

Frequently asked questions

What is the closest functional alternative to the LM5100AMRX/NOPB?

The LM5106MM/NOPB is a synchronous-channel half-bridge driver with faster rise/fall times (15 ns, 10 ns) but lower peak output current (1.2 A). It operates from an 8 V supply and shares the same -40°C to 125°C temperature range. The choice depends on whether you need the 3 A drive strength of the LM5100A or the faster switching of the LM5106.