Dual 1.5A inverting driver for N- and P-channel FETs
The Microchip MIC4426YN is a dual low-side MOSFET driver with independent inverting input channels, each capable of sourcing and sinking 1.5 A peak current. It is designed to drive both N-channel and P-channel power MOSFETs, making it a flexible choice for medium-current gate drive in switch-mode power supplies, motor controllers, and DC-DC converters. The 4.5 V to 18 V supply range lets it work from a 5 V logic rail up to a 15 V industrial bias, and the 20 ns typical rise time keeps switching losses low at moderate frequencies.
With a typical 20 ns rise time and 29 ns fall time into a 1 nF load (datasheet condition), the MIC4426YN can charge and discharge the gate capacitance of a medium-power MOSFET in tens of nanoseconds. The symmetrical 1.5 A source and sink current means the driver can both turn on and turn off the FET at roughly the same rate, which simplifies dead-time budgeting in half-bridge or push-pull topologies.
150°C junction rating — deployment context
It can sit next to a hot MOSFET on a power-stage PCB without needing a heatsink, provided the ambient stays below 100°C and the package dissipation is respected.
Each channel's input is inverting, so a logic high on the input turns the MOSFET off, and a logic low turns it on. This is the opposite of the non-inverting MIC4427 family. The independent channels let each output be controlled separately, useful for driving two discrete FETs or one FET with a separate enable signal.