1.5A peak output — gate charge delivery
The MIC4128YME: Rated for 1.5A peak source and 1.5A peak sink current, this driver charges and discharges the MOSFET gate capacitance quickly. With typical rise and fall times of 20 ns and 18 ns respectively into a specified load, the switching transition losses stay low enough for power supplies switching in the 100-500 kHz range. The 4.5V to 20V supply range covers both 5V-logic and standard 12V gate drive rails used in telecom bricks and industrial DC-DC converters. Logic thresholds of 0.8V (VIL) and 2.4V (VIH) mean a 3.3V or 5V PWM controller can drive the input directly without a level shifter.
Low-side topology and dual independent channels
Configured as a low-side driver, the MIC4128YME drives the source terminal of an N-channel MOSFET to ground — suited for buck converters, forward converters, and synchronous rectifier stages where the FET source is referenced to the return rail. The two channels are independent with separate inverting and non-inverting inputs, so one channel can drive the main switch while the other drives an active clamp or synchronous rectifier.