Charger IC for 1-3 cell Li-Po packs
The BQ24125RHLRG4 is a bqSWITCHER series Li-Ion/Polymer charger IC from Texas Instruments, supporting 1 to 3 series cells with a maximum charge current of 2A and a supply voltage ceiling of 16V.
BQ24125RHLRG4 – TI bqSWITCHER Li-Ion/Polymer Charger IC
MPNBQ24125RHLRG4
End of Life
Texas Instruments bqSWITCHER™ series, BQ24125RHLRG4, Li-Ion/Polymer battery charger IC, 1-3 cells, 2A max charge current, 16V max supply, 20-VQFN Exposed Pad package, Tape & Reel.
$58.8000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | bqSWITCHER™ |
| Mounting | Surface Mount |
| Battery pack voltage | 8.4V |
| Supply voltage | 16V |
| Current - charging | Constant - Programmable |
| Charge current - max | 2A |
| Operating temperature | -40°C~85°C(TA) |
| Package | Tape & Reel (TR) |
| Case | 20-VFQFN Exposed Pad |
| Number of cells | 1 ~ 3 |
| Fault protection | Over Temperature |
| Battery chemistry | Lithium Ion/Polymer |
| Programmable features | Current, Timer |
Product details
Frequently asked questions
Is the BQ24125RHLRG4 compatible with 3-cell Li-Po batteries?
Yes. The part supports 1 to 3 series cells, and the battery pack voltage is listed as 8.4V, which corresponds to a 2-cell Li-Po full-charge voltage. For 3 cells (12.6V full charge), the charger can be configured within the 16V max supply — the cell count is set by external resistor programming.
Is the BQ24125RHLRG4 a direct replacement for BQ24125RHLR?
The BQ24125RHLR and BQ24125RHLRG4 share the same base product number BQ24125 and the same 20-VQFN package. The G4 suffix indicates lead-free (RoHS) compliance and Tape & Reel packaging — electrically they are identical. The RHLR variant is the non-G4 version; confirm your BOM's RoHS requirement before substituting.