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WEBENCH® Tools/BQ21040: BQ21040

William Yan
Prodigy 210 points
Part Number: BQ21040

Tool/software: WEBENCH® Design Tools

I use a battery with a 18650 lithium battery and no temperature sensing pins.
Is it appropriate to use the BQ21040 as a charger?
The temperature sensor function of the BQ21040 is not used.

If this feature is not needed, a fixed 10kΩ can be placed between TS and VSS to allow normal operation.

IS there possible  i placebetween TS and VSS to allow normal operation. then without 10kΩ thermistor?

http://www.ti.com/cn/lit/ds/symlink/bq21040.pdf  P14

  • 0
    TI__Guru* 75656 points

    Hello

    "I use a battery with a 18650 lithium battery and no temperature sensing pins. Is it appropriate to use the BQ21040 as a charger?" -- Bill J -- Yes, but note that this device has a small package and at higher charge currents the thermal rise may trigger current limit.
    "IS there possible  i place between TS and VSS to allow normal operation. then without 10kΩ thermistor?" -- Bill J -- If the TS / NTC thermistor is not used connect TS pin to ground with a 10k resistor.