NTC resistor for BQ24401

Joe Lee

Intellectual 330 points

Other Parts Discussed in Thread: BQ24401, BQ2000T

Hi,

As BQ24401 is selected to use, may I have a suggestion about the NTC thermistor for TS described in datasheet?

Br,

Joe

over 14 years ago

0 Chris Glaser over 14 years ago

TI__Guru**** 150900 points

The usual thermistor is a 10k NTC. Then, you set the LTF and HTF thresholds with a voltage divider. These 2 resistor and the thermistor can be any value desired but 10k is typically used.

The bq24401 is very similar to the bq2000T. In the bq2000T's user guide (http://focus.ti.com/lit/ug/sluu006a/sluu006a.pdf), it recommends this thermistor (which is included with the EVM):

(part number 2322-640-63103, manufacturer Philips)

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NTC resistor for BQ24401