What this PMIC does that a generic regulator cannot
The LP873248RHDRQ1 integrates two 2 A buck converters and two 300 mA LDOs in a single 28-VQFN package — a combination that saves board space and reduces BOM count compared to discrete regulators for an automotive SoC power tree. Switching at 2 MHz keeps the inductor values small (typically 1 µH to 2.2 µH) and pushes the fundamental switching noise above the AM band, which simplifies input-filter design in a radio-equipped vehicle. The input supply range of 2.8 V to 5.5 V covers both a 3.3 V intermediate rail and a direct 5 V battery connection, so the same part can serve pre- and post-regulation stages.
Why the 125°C rating and AEC-Q100 matter for your BOM
This part is qualified for under-hood and engine-bay locations where the ambient inside the ECU exceeds 105°C. AEC-Q100 qualification means the part passed the full automotive stress suite: accelerated life test, temperature cycling, moisture sensitivity, and ESD robustness. Without this mark the part cannot be placed on a production vehicle BOM. The wettable flank package allows automated optical inspection (AOI) of the solder joints after reflow — a requirement for many automotive Tier-1 assembly lines that cannot rely on X-ray for every board.
Active production — no LTB watch needed
Texas Instruments is the sole manufacturer.