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BQ24090: Supercap charger

Paul Tran
Intellectual 280 points
Part Number: BQ24090
Other Parts Discussed in Thread: BQ25170

Hi TI expert 

we have done design with super cap charger 4.2V with  BQ24090 

Now, we need to change supper cap to LIC (lithium-ion capacitor ) and the ref voltage charger is only 3.8V. 

So the question has an alternative solutiontion with  BQ24090 that support output 3.8V for charge LIC 

Charger current: 1A (can support 2A max)

Volt: 3.8V

Input voltage: 5V 

please help to advise 

  • 0
    TI__Guru 65846 points

    Hello

    We do not have a charger designed for LIC (lithium-ion capacitor).  Changing the charge voltage for BQ24090 is not an options.

    But we do have a new device, BQ25170 that will support LiFePO4 and voltage can be set to 3.7V. see below link