Hello E2E Experts,
Good day.
I am designing a charging circuit for a 2-series Li-ion battery pack, and I would like to find a suitable TI charger IC that meets the following requirements:
The charger board must be able to power the system load and charge the battery in all three combinations:
Battery present / VIN present
Battery present / VIN absent
Battery absent / VIN absent
Specifically, when the battery is absent but VIN is present, I do not want VIN to be directly passed to the output (i.e. VIN should not connect directly to VOUT).
Instead, the output should be regulated to a voltage close to the nominal battery voltage.
The input supply (VIN) may be around 36 V or higher, so the IC must tolerate a high input voltage.
Could you please recommend an alternative TI charger IC that supports:
2S Li-ion battery charging,
Standalone operation (no MCU required),
Regulated output when battery is absent, and
High VIN tolerance (~36 V or more).
During my research, I found the BQ25690, which seems to meet many of my requirements, but I could not find sufficient documentation, application notes, or design resources about this part.
I would like to know whether the BQ25690 is suitable for this type of system, and if so, could you please share additional application notes, detailed datasheet, or reference designs related to this configuration?
Regards,
TICSC
