60V Vds — 48V rail margin built in
The CSD18534Q5AT: The 60 V ceiling gives 20 % headroom above a 48 V nominal bus — the standard margin for telecom rectifiers, PoE injectors, and 48 V battery-backed supplies. The 8-VSONP (5x6 mm) package keeps the footprint compact for dense board layouts.
9.8 mOhm Rds(on) — thermal budget at 14 A
At that operating point conduction dissipation is under 2 W — the 3.1 W Ta and 77 W Tc power ratings confirm the package can shed heat when the PCB copper island is sized to the 8-VSONP exposed pad. The gate threshold max is 2.3 V at 250 µA, so a 3.3 V logic signal will not fully enhance the channel; use the 4.5 V or 10 V drive levels listed for lowest Rds(on).
11.1 nC gate charge — light driver load
Total gate charge at 4.5 V is 11.1 nC, and input capacitance at 30 V drain bias is 1770 pF. A standard 1 A gate driver can toggle this FET past the Miller plateau in under 20 ns, keeping cross-conduction losses low in hard-switched topologies. The ±20 V gate rating gives headroom for gate-drive overshoot during fast turn-off.
Full temperature coverage
That covers industrial motor drives with 85°C ambient and 40°C self-heating, plus automotive under-hood compartments where soak temperatures hit 125°C. The 150°C max is the junction limit, not the case — keep the case temperature below 125°C in continuous operation to stay inside the SOA.
Active lifecycle — no phase-out risk
Texas Instruments lists the CSD18534Q5AT as Active product status. The part is ROHS3 compliant.