Dual 4 A low-side driver for harsh environments
It drives both N-channel and P-channel MOSFETs from a single supply rail between 4.5 V and 15 V, covering 5 V logic and 12 V gate bias without a separate regulator. The 8-SOIC package keeps the board footprint small while the 20 ns rise and 15 ns fall times (typical at 4 A) support switching frequencies above 500 kHz in hard-switched converters.
What the 4 A peak current buys you
The 4 A peak source and 4 A peak sink current determine which power MOSFETs this driver can switch cleanly. A MOSFET with 60 nC total gate charge at 500 kHz switching frequency needs 30 mA average drive current — well within the 4 A peak capability, but the peak current matters for the Miller plateau region where the gate voltage stalls. The 4 A rating ensures fast voltage slew across the plateau, minimising switching losses. Independent channels with both inverting and non-inverting inputs let one IC drive a half-bridge (high-side and low-side) or two separate MOSFETs with independent control.
The same die is available in other package and reel options under the UCC27325 family.