Hello Muhammad.
The BQ24031-Q1 is a linear device. This means that as the voltage or current through the device increase so will the power being dissipated. That is why you see a high temperature at 12V vs at 7.5V. Even though the AC input can work up…
Alphonsine,
The only difference between the bq24030EVM and the bq24031EVM is the IC populated on the board.
The bq24030 has a regulation voltage of 4.2V and the bq24031 regulates to 4.1V. There are no other differences.
Thank you for pointing out the…
The charger can only buck down from its input source. The LiIon battery maximum charge votlage is 4.2V. You could add a low cost boost converter to SYS output. If your system and charge current and input voltage are low enough that thermal losses are…
Hello Carlos,
The EVM for the BQ24030 and BQ24031 are the same board so if you ordered the BQ24031EVM you could remove the BQ24031 and place the BQ24030 in its place. I am note sure what is causing the substantial pricing difference so I would recommend…
bq2057 or bq24031 (with USB input grounded) would provide a linear regulator solution. The most efficient solution would be a step down buck converter like TPS560200 followed by a linear charger like bq24079.
The parts you mention above all have an ISET pin. At charge currents below 100mA, the accuracy suffers as you can see by the K(ISET) specificaiton in the datasheet's electrical specs tables but, even if we haven't tested for charge currents below 100mA…
Hi Francisco,
Our Battery Charge Management Selection Tool and Parametric Search make it simple to find the right battery charger for your application. For a linear charger for single-cell Li-Ion, the bq24070/1 or bq2403x families might be great choices…
Other Parts Discussed in Thread: BQ24032A , TPS63010 I have a board where the output of a bq20403x part feeds a buck/boost regulator. When increase the load on the regulator to the point it can no longer regulate the output voltage of the regulator of course…