Part Number: BQ21040 Hi Team,
customer is observing a Pre-charge to fast-charge transition threshold of 1.54V instead of the 2.5V claimed in the DS.
The battery was simulated by a H-bridge power supply.
Would you know what could cause this deviation…
Part Number: BQ21040 I was struggling with a different charger IC, so I switched over to the BQ21040DBVR. Right now it is Deadbugged and mod wired in place of the original charger IC.
The target is to charge a Sparkfun PRT-13851 battery with a USB connector…
Part Number: BQ21040 Tool/software: Hi,
1st off, the Part number in the Part Number field is not the Part Number of interest. Entering BQ2155YFPR was not being accepted.
I am a mechanical engineer working on a smart ring, and in some spaces even tens…
Part Number: BQ21040 Other Parts Discussed in Thread: TPS61288 , CSD13380F3 , , TPS22959 , BQ2980
Hello,
I am very new to this, but would like to get your help and build up my knowledge.
My Application is to make portable escape room puzzles that…
Part Number: BQ21040 Hi,
I have connected Battery charger CHG pin directly to the controller. After full charge or no battery, I am getting Low on CHG pin.
No any change on CHG pin. Please see the image below for schematic.
Regards,
Manish …
Part Number: BQ21040 Hi Sir,
Do we have bq21040 charging current distribute fig.?
Customer would like to know charging current distribute fig. under specific condition.
Due to spec. shows 10% is too rush, it only difference 10~15mA in customer production…
Part Number: BQ21040BQ21040 has Vin-DPM voltage set at 4.3V.
Consider the BQ21040 charging the battery from a common rail, which is also connected to other devices. The input can only source 500mA and the other device connected to the rail is taking…
Part Number: BQ21040 Hi,
We are using the BQ21040 with a Lithium Polymer cell that has a protection circuit already installed. I am currently testing performance at low voltage situations. Battery and charging circuit is connected to a constant 20mA…
Part Number: BQ21040 Dear Team,
I am trying to build a GPS device with battery backup for cars
My charger IC BQ21040, powered via LDO TL751M (input 12v and output 5v) .Battery size 150mah.
Every thing works fine but the LDO is getting heated up…
Part Number: BQ21040 Dear Sir/Ms.
I don't found Vout drop voltage when Iout=10~50mA in datasheet. I only found Max. Drop voltage 550mV when Iout=0.5A. May I have this parameter?
My customer application is
If the V voltage is entered in the 4.35…
