Part Number: BQ25505 I have my solar cell connected to BQ25505 according to the datasheet simplified schematic below. This is a permanent connection in my system and I can not change it unless I break into my module. The battery is external to my system…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25504 I have an energy harvesting application that requires an MPPT update rate faster than once every 16 seconds. I am using a BQ25505 and forcing a faster update rate by momentarily disabling &…
Part Number: BQ25505 Hi TEAM
Let me ask a the short question.
・Could you tell me about the ON condition and voltage of VB_SEC_ON?
（Will it be on only while VBAT_OK is high? And what will happen to the output voltage?)
best regards
TATSU
Thanks Jeff,
I drive /EN pin with 5V when an external USB charger is attached (to charge my battery) to disable BQ25505 charging from solar source. In case battery voltage is low lets say battery is fully depleted or VBAT < 1.9V, as you mentioned the…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570EVM-206 Hi,
We are using BQ25505 boost charger to recharge a secondary battery.
Test setup description as below:
A discharged battery of 2.75V is connected across VBAT_SEC pin..
VIN_DC is supplied…
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 , Hi Experts,
We would like to ask if the BQ25505RGRT charger IC does support battery rated 1.5 to 2.7V. Is it possible for this rechargeable rating?
Thank you.
Regards, Archie A.
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 , Hi team,
Could you provide BQ25505 vs BQ25570 comparision table?
My customer is considering those devices for energy harvesting application (Piezo or PV).
Regards,
Itoh
Part Number: BQ25505
Hi
The customer design with BQ25505, and find the VBAT_OV is not correct.
Attached the schematic
ROV1 and ROV2 set VBAT_OV the maximum OV is 3.1V, but in fact, but the actual charge is more than 3.1V.
How to solve this problem? …
Part Number: BQ25505 Other Parts Discussed in Thread: BQ25570 Hi, support team
My customer has the questions as follow:
I use 3 solar panels with open circuit voltage of 2V and short circuit current of 69μA in parallel to charge 0.1F 5.5V supercapacitor…
Part Number: BQ25505 Hi,
In my current design there is a bq25505 harvesting power from a solar cell and charges my battery.
I am redesigning my electronics for a flexible PCB. Is there a flexible chip version of bq25505 or a similar alternate that is a…
