BQ24075: BQ24075: temperature monitor

Lan Ho

Prodigy 40 points

Part Number: BQ24075

Hi,

According to 9.3.6 Battery Pack Temperature Monitoring.

The allowed temperature range for 103AT-2 type thermistor is 0°C to 50°C.

I have one question about this.

Colud i decrease the temperature range to 0°C to 45°C.by adding two external resistors?

over 6 years ago

0 Paul Yeh over 6 years ago

TI__Genius 16175 points

Lan,

Yes, you can use external resistor to fine tune cold and Hot temperature protection point.

Below is circuit and calculation equation.

Thanks

0 Raheem over 6 years ago in reply to Paul Yeh

TI__Mastermind 21590 points

Hello Lan,
Please take a look at the BQ24075T which uses a voltage based NTC monitoring. On the BQ24075, you can extend the temperature range but you can't make it smaller.

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BQ24075: BQ24075: temperature monitor