I am considering the bq2031 for an SLA charger for use in a standby power application.
The device will be used outdoors so temperature-related behavior is important. The datasheet indicates operating temperature (Topr) of -20 to +70C and "Temperature…
We do not really have something that fits all of your requirements so any solution will require external components to adapt the design to the IC. The voltage is higher than we typically design our ICs to work with. The bq2031 is a lead acid charger so…
Yes, either the bq2031 or bq24450 will work. Each IC's charge voltage can be adjusted with a resistor divider, so you could simply change the divider with a jumper to charge the different cell count.
The bq24450 is a linear controller, while the bq2031…
Other Parts Discussed in Thread: UC2909-EP Hello TI,
I have 12V input DC source and need to charge 6Volt battery. We had used UC3909 (out pin) switch mode option(Buck) and drop the voltage as per requirement.
Is that Bq2031 can do this job? Please…
You will need to first boost the super cap voltage to be above the maximum battery voltage that you want. For this, the TPS61175 will work or the TPS61170 for lower charge currents.
After you have boosted the voltage, the bq2031 or bq24450 should be…
You would need to get approval from your battery pack manufacturer that your suggested method of charging isok to them and safe. The issue is that these buck converters are not meant to be battery chargers. Our battery chargers have very accurate current…
Other Parts Discussed in Thread: BQ2031 Hello! I have a question regarding flooded lead acid cell charging. All of this talk of battery charging seems to be focused around charging small capacity sealed batts, so I want to be a little more sure about…
I used a resistive divider circuit to make the TS pin happy, per the app note. I have 5.23k_1% from VREF & TERM_EN to 7.5k_1% to ground. The midpoint of the divider goes through 100 Ohms into the TS pin. This is an exact copy of the app note circuit.…
