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…
Hi Stefan,
Depending on your charge cable resistance and your load, the value at the four-quadrant supply may be different from the actual battery pin. Please measure directly at the VOUT pin.
Regards,
Mike Emanuel
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 has on…
Part Number: BQ21040 I was using commonly available TP4056 for charging my 1000mAh LiPo. Someone suggested me to use TI's BQ21040 as it is more trusted.
I know that Lipo battery goes from 2.8V(0% SOC) to 4.2V(100% SOC) but I noticed a strange thing…
Part Number: BQ21040 On a new design, I am looking to use the BQ21040 battery charger. This is a part my company has used on a lot of designs. The attraction to it is cost and the ability to run stand-alone. The catch on this new design is that the Single…
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 The datasheet states that if the battery voltage drops below Vrch (nominally 4.105V), then a new charge cycle is initiated even after the 10-hour timer has timed-out.
The datasheet also states if a discharged battery fails to reach…
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 Mistry
Part Number: BQ21040 Other Parts Discussed in Thread: BQ25171-Q1 , BQ25170 Hello,
I've a custom board with BQ21040 charger and I'm looking for to charge a Lipo battery with the following parameters:
1. Voltage: 3.7V
2. Capacity: 60mAh
3. Shape…