Hello,
Since the battery website states the nominal voltage as 3.7V, this typically translates to a max charge voltage of 4.2V. You can confirm this with the battery vendor. The BQ2407x cannot be used to charge LiFePo4 since that has a different charge…
Hello
We have a two IC solution that would be the combination of wireless power IC and LiFePO charger.
Take a look at the BQ51013B for wireless power.
To charge battery take a look at BQ25071.
Updated July 8, 2019
Part Number: BQ24079 Other Parts Discussed in Thread: BQ25071 , BQ25070 I am designing a single LiFePo4 cell charger from usb.
From the datasheet, BQ24079 have a VBAT target of 4.1V. Just wondering if anyone can tell me if LiFePo4 can handle this voltage…
A switching charger solution for LiFePo4 would be the bq24105.
If you are going to continue with the Linear charger another device to consider is the BQ25071.
TI also has a few linear chargers that may work in this power range, bq24040 and bq21040.
But none will meet 3.9V charge requirement. An external circuit would be required to stop charge at 3.9V.
If 3.7V is good enough the BQ25071 may be an option…
Hi, thanks for the reply.
But according to product data sheets, bq24105 and bq25071 are for Lithium based chemistry batteries.?
I'm fine with designing a power path selector so that no load is put on the battery while being charged. I think bq2002…
Regarding 1, please see the notes in figure14 on page 12.
Regarding 2, connect 1k resistor from IMON to GND.
Regarding 3, I assume that you are not use TS function, but you still want charge enabled. Then the lowest current consumption is under the…
Other Parts Discussed in Thread: BQ25504 , BQ25505 , BQ25570 , BQ25071 Hi all,
I am developing a wireless sensor system to be embedded in yacht sails. I now just have to solve the powering issue. Each sensor array draws 100mA at 5V on average, (300mA…
