3A automotive buck with a 28V input ceiling
It belongs to the SWIFT family with Eco-Mode light-load efficiency, and carries AEC-Q100 automotive qualification — meaning it is validated for the temperature cycling, vibration, and extended life profile expected in under-hood and chassis-domain electronics.
Switching at 570 kHz — inductor sizing and EMI
The fixed 570 kHz switching frequency sits in a practical middle band: high enough to keep the output inductor in the 10–22 µH range for most designs, low enough that the fundamental switching harmonic and its first few multiples stay below the AM radio band and do not force expensive input filters. The absence of a synchronous rectifier means the low-side path uses an external Schottky diode — factor that into the BOM count and the thermal layout around the 8-SOIC package.
Temperature range and the environments it unlocks
The 8-SOIC package with a copper pad on the PCB underside handles the thermal dissipation for a 3A buck at this switching frequency — the limiting factor is the external diode's junction temperature, not the IC itself.
For a BOM that needs a qualified automotive buck today and for the next several production runs, this is a stable line item — no forced redesign horizon.