I²C interface — digital charge control without analog trim
The I²C bus carries all charge parameter programming: charge current, termination current, float voltage, and timer duration. That removes the BOM cost of external resistor dividers and trim pots, and lets the firmware adapt the charge profile to different battery packs detected at power-up. Over-voltage fault protection is built in, so a failed I²C write or a stuck bus won't send the pack to overvoltage.
Package and mounting — 24-TQFN with exposed pad
The 24-TQFN (4x4 mm body) is a surface-mount part that needs the center pad soldered to a PCB copper plane for thermal and electrical ground connection. The supplier device package designation confirms the same footprint. For a 7A charger, the PCB layout should use multiple vias under the pad to conduct heat to inner layers. The exposed pad also carries the ground return for the high-current charge path.
Lifecycle and sourcing reality
For BOM planning, this is a stable line item you can qualify into production without worrying about a last-time-buy window.