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Hi team, I am using Fuel Gauge Ic LC709202FRD-01, i am able to read and write everything through I2C. But issue is with Cell temp, It is always showing 25 degree Celsius. I checked cell temp with K-TYPE thermometer of battery and i got 33 degree Celsius but in fuel gauge it is always showing 25 degree Celsius, no changes occurred even i changed environment temp. In Datasheet it is mentioned that *Set HIGH When reading in the temperature, held low at other times of TSW pin, How can i set HIGH or LOW as there is no register information present regarding TSW pin also it is OUTPUT pin.? Could you please help me register setting for this.?

Please set registers in order to use a thermistor as follows .

1. Set B-constant of a thermistor to “Adjustment B:0x0B”. .

2. Set 0xAA55 to “Cell Temperature:0x0C”. .

Please refer to the specification sheet of thermistor to the B-constant. TSW pin is an output pin. The LSI outputs High level to the pin when it needs it.
Answered by:
ON Semiconductor
2015-06-15 09:37:29.845