LiFePO4 single-cell charger with USB input
The Texas Instruments BQ25070DQCR is a single-cell Lithium Iron Phosphate (LiFePO4) battery charger IC with a USB input and programmable constant-current charge up to 1 A max.
Charge current and voltage — what sets the BOM
The 1 A max charge current is the thermal design ceiling for the 10-WSON (3x2) package. The battery pack voltage is 3.5 V.
Protection and interface
On-chip fault protection covers over-temperature and over-voltage, reducing the need for external supervisory components. The USB interface allows direct connection to a standard USB port or a dedicated USB power source without level-shifting.
Sourcing and lifecycle
No official second-source or pin-compatible alternate is listed in the TI family.
