Single-cell linear charger for space-constrained Li-Ion designs
The Texas Instruments BQ25100BYFPT is a linear battery charger IC for single-cell Lithium Ion or Lithium Polymer packs, delivering a programmable constant charge current up to 250 mA. It accepts a USB input supply up to 6.45 V and integrates over-temperature, over-voltage, and short-circuit fault protection. The part is housed in a 6-bump DSBGA package, making it a fit for compact portable devices where board area is at a premium.
250 mA charge current and input voltage range — what they mean for the BOM
The 250 mA maximum charge current sets the ceiling for charge time on a given cell capacity. The 6.45 V absolute maximum supply voltage tolerates a standard 5 V USB bus with margin for transients.
Sourcing and lifecycle
The BQ25100BYFPT carries an Active product status and is ROHS3 compliant.