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BQ25101: General Enquiry: Bias Voltage on TS pin

David Tandri
Expert 1355 points
Part Number: BQ25101

Hi,

I would like to ask some general questions.

What is bias voltage on TS pin?

How does it affect the charging performance?

How does it affect external system load that the chip is used to power?

Thanks

  • 0
    TI__Guru* 75976 points

    Hello

    "What is bias voltage on TS pin?"--The BQ25101 and other devices in the family use a 10uA current source to drive the TS pin and develop a voltage.  This voltage is measured internally at the TS pin and compared with voltage that correspond to temps.  See data sheet Page 7 electrical specifications "Battery-Pack NTC Monitor" also section 8.3.8.

    "How does it affect the charging performance?" -- The BQ25101 will support JEITA  and adjust charging with battery temp thru TS, see data sheet Figure 20.

    "How does it affect external system load that the chip is used to power?" -- The system load would be connected to OUT / Battery and they would follow the Battery.