BQ20Z90: Over Temp Chg and OT Chg Recovery margin

Dexter Choi

Expert 2795 points

Part Number: BQ20Z90

Dear Sir,

I want to set OTC(55c), OTCR(54c). Gap of OTC and OTCR is just 1c.
There are any effect to operation?

Thanks.

0 Kang Kang over 5 years ago

Hello Dexter,

I would recommend to have more than 1 degree C. Can you attach a gg file?

0 HAN BYUL LEE over 5 years ago in reply to Kang Kang

Does not have a IC tolerance?

Actually, I set the OTC (55 dgree C) and the OTCR (50 dgree C).

But now I want to change OTC and OTCR so closely.

And I consider about with thermistor and TI IC tolerance.

I use the thermistor tolerance is 1%(10㏀), then I want to asked about to gap with OTC and OTCR.

How much is proper value?

0 Kang Kang over 5 years ago in reply to HAN BYUL LEE

Hello Han Byu Lee,

The temperature measurement is based more on the tolerance of the NTC thermistor the customer uses.

We recommend a 103AT-2 Semitec, that's what we have on the EVMs.

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