Active-production 1-cell charger with I²C control
The I²C interface (cite:) allows the host to set the charge current on the fly, which is useful for adjusting charge rate based on battery temperature or input power budget.
Charge current and protection envelope
Maximum charge current is 500 mA (cite:) — this sets the charge time for a typical 500 mAh cell to roughly one hour at the constant-current phase. The IC integrates fault protection against overcurrent, overtemperature, overvoltage, reverse current, and short circuit (cite:), so the BOM does not need external protection diodes or current-limit resistors.
20-DSBGA package and footprint
The 20-DSBGA package (cite:) measures roughly 2.0 mm × 1.5 mm — a 0.5 mm pitch BGA that requires a 4-layer board for fan-out and a controlled reflow profile. The small footprint suits space-constrained wearable or IoT designs, but the BGA means rework is more involved than a leaded package.
Texas Instruments lists it as ROHS3 compliant (cite:).