Low-side MOSFET driver with 3A/5A peak drive
Each of the two channels is independent with an inverting input, giving the layout engineer flexibility to route the PWM signal from the controller without extra inversion logic. The supply range of 3.5V to 14V covers common bias rails from a 5V or 12V auxiliary supply, though at the low end the gate drive voltage for the MOSFET will be limited to the supply rail, so check the Rds(on) curve of the selected FET at the actual drive voltage.
Logic compatibility: 3.3V and 5V PWM signals
The logic input thresholds are specified at VIL max 0.8V and VIH min 2.2V, which makes the LM5111-2MX/NOPB directly compatible with both 3.3V and 5V logic families from the controller without level-shifting. A 3.3V PWM signal from a typical MCU or DSP will reliably cross the 2.2V VIH threshold, and the 0.8V VIL ensures noise margin on the low side. The inverting input type means the output goes high when the input is low and vice versa — confirm the polarity matches the controller's PWM output or add an external inverter if needed.
The 8-SOIC package with a 0.154-inch body width (3.90 mm) is a standard footprint that fits most PCB layouts without needing a thermal pad, but at high switching frequencies and with large capacitive loads, the package's thermal impedance should be checked against the total power dissipation from gate charge losses and quiescent current.