2A programmable charger for 1-2 cell Li-ion packs
The BQ24103RHLR is a constant-current, programmable Li-Ion/Polymer charger IC from TI's bqSWITCHER™ series. It handles 1 to 2 series cells with a maximum charge current of 2A and a battery pack voltage of 8.4V — the termination voltage for a 2S Li-ion stack. Fault protection includes over-temperature and over-voltage shutdown, and the charge current and timer are programmable via external components. The 16V maximum supply voltage covers common 5V USB and 12V wall-adapter inputs.
Temperature grade and package details
The 20-VFQFN Exposed Pad package (20-VQFN, 3.5x4.5 mm body) requires a thermal land on the PCB for heat dissipation.
No official second-source or cross-reference is listed, but the bqSWITCHER family includes functionally similar chargers with different cell counts or current ratings.