Re: [EE]:: All singing all dancing 1 to 4 cell LiIon charger / OTG output / Solar MPPT IIC, ... IC

Useful looking chip. Thanks for the pointer.


On Tue, 1 Jul 2025 at 14:11, RussellMc <[email protected]> wrote:

> 150 pages of interesting reading:
> *https://www.ti.com/lit/ds/symlink/bq25798.pdf
> <https://www.ti.com/lit/ds/symlink/bq25798.pdf>*
>
> I see specs for many ICs I'll never use.
> Most I note with appropriate interest and pass by.
> This one was cited on Stack Exchange EE in a user query and looked so
> useful  to be worth flagging.
>
> Very high efficiency buck/boost 1 to 4 cell LiIon charger and OTG USB C
> output.
> MPPT, solar and USB and "almost anything else" input.
>
> About $US8.x/1 at Mouser and about half that at LCSC.
> 29 pin QFN to keep you awake :-) (0.4mm pin-pin)
>
>
> TI SAY
>
> BQ25798
> *I2C Controlled, *
> 1- to 4-Cell, 5-A Buck-Boost Battery Charger with
> Dual-Input Selector,
> MPPT for Solar Panels and
> Fast Backup Mode
>
> Powers USB port from battery (USB OTG) –
> 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD
> PPS –
> OTG output current regulation up to 3.32 A with 40-mA resolution
> --
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> https://mailman.mit.edu/mailman/listinfo/piclist
>
-- 
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
https://mailman.mit.edu/mailman/listinfo/piclist