What this energy-harvesting PMIC does for your BOM
The BQ25570RGRT is a boost converter and power management IC designed to extract and store energy from low-voltage sources like small solar panels, thermoelectric generators, or piezoelectric transducers. Its 488 nA quiescent current means the chip itself barely loads the source — critical when the harvest is measured in microwatts. Input voltage range runs from 0.12 V up to 4 V, so it can cold-start from a single solar cell under dim light or a TEG with a tiny temperature differential. The 20-VQFN package (3.5x3.5 mm, exposed pad) keeps the footprint small enough for compact sensor nodes or wearable prototypes.
Supply current of 488 nA is the no-load quiescent draw; the actual system load depends on the downstream storage capacitor and the load switch state. That sub-microamp idle current is what makes this part viable for battery-less designs that need to accumulate charge over minutes or hours.
That means it is a safe BOM anchor for new designs and production runs. The base product number is BQ25570, so any PCN or documentation updates will track under that family. Sourced per RFQ — confirm quantity and lead time at quote. No stock-holding claim; availability confirmed at order placement.