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BQ25306: Thermistor Temperature Monitoring setting

Part Number: BQ25306

Hi Team,

Customer is designing charger in he's project, and we have some question want to check.

  1. Do we have a TS NTC calculator for BQ25306 at this moment?
  2. Can we design the battery charging range in 0~50 degree C ? How to calculate it ?
    My understanding is I can directly use RNTC,T1(0C) & RNTC,T3(50C) and use VT1%=73.5% / VT3%=47.25% in to Equation 1 / 2, the result of RT1 /2 will be designed to work in 0~50 degree C, am I right?
  3. Or you will recommend I use the RHOT to shift HOT temperature T3 to 50 degree C ?
    if RNTC = 4.9kΩ ( at 45°C), RNTC = 4.5kΩ ( at 50°C), then the RHOT should be 400 OHM in 0~50 degree C design, am I right ?   

 

Thank you!!

Kai Lai