Dual low-side driver with 4A peak drive for both N- and P-channel MOSFETs
The Texas Instruments UCC37324DGN is a dual low-side gate driver designed to drive both N-channel and P-channel MOSFETs with independent, non-inverting inputs. Each channel delivers 4A peak source and 4A peak sink current, with typical rise and fall times of 20ns and 15ns respectively. The driver operates from a 4.5V to 15V supply, making it compatible with 5V and 12V logic rails without an extra regulator. The 8-HVSSOP package includes an exposed thermal pad for improved heat dissipation in high-switching-frequency applications. Rated for a junction temperature range of -55°C to 150°C, this part is suited for avionics, downhole drilling, and engine bay environments where wide temperature extremes are the norm.
4A peak current — what it means for the switching stage
The 4A peak source and sink rating determines how fast the MOSFET gate capacitance charges and discharges. With 20ns rise and 15ns fall times, the UCC37324DGN can drive moderate gate charges at switching frequencies up to several hundred kilohertz while keeping crossover losses low.
Lifecycle and sourcing
It is ROHS3 compliant. No direct second-source or pin-compatible alternate is listed in the official cross-reference, but the LM5106MM/NOPB is a functionally similar half-bridge driver with 1.2A switching current and N-channel-only drive, which may suit lower-current designs (note: different package and half-bridge topology, so verify pin compatibility).