What this charger brings to a 1S Li-ion design
It handles a single cell (1S) and delivers up to 5A charge current — enough for a fast-charge smartphone or a power-tool pack that needs to fill in under an hour. The 14V maximum supply voltage gives headroom for USB-C PD adapters or 12V barrel jacks without an external pre-regulator. Over-current and over-temperature protection are built in, so the charger can safely terminate a charge cycle if the cell gets hot or the load pulls too much.
A 5A max charge current lets you size the charging path for fast turnaround. The I²C interface lets you dial back the current for smaller cells or thermal budgets.
Texas Instruments continues to manufacture it, so there's no LTB or EOL pressure for new designs. The base product number is BQ25890 — the HRTWR suffix denotes the 24-WQFN package and tape-and-reel / cut-tape shipping options.