The Texas Instruments BQ25710RSNT is a multi-chemistry battery monitor that talks SMBus to the host, handling 1 to 4 series cells. It packs overcurrent, overtemperature, and overvoltage fault protection right on the die, so you can skip a few external comparators. The 32-WFQFN with exposed pad (4x4 mm) needs a solid thermal via stitch under the paddle if you are pushing the dissipation — the pad is the main heat path. The SMBus interface means the host firmware reads cell voltages, temperatures, and fault flags over a standard two-wire bus — no proprietary protocol to decode.
No last-time-buy notice has been issued, so you can design it into new BOMs without worrying about a surprise EOL. ROHS3 compliant, which keeps it clean for EU and global markets.
Package and footprint — what to know before layout
Surface-mount in a 32-WFQFN with exposed pad. The supplier device package is 32-QFN (4x4 mm).
Cell count and chemistry — what it handles
Supports 1 to 4 series cells, which covers most portable tool packs, UPS battery stacks, and e-bike batteries. Multi-chemistry means one BOM can serve Li-ion, Li-poly, NiMH, or NiCd packs — just reconfigure the SMBus commands.