BQ25628: Design parameter question

Oliver Lin

Expert 4475 points

Part Number: BQ25628

Hi expert,

My customer is asking about ILIM and TS value.

Do we support other TS resistor value? Or 10kohm is only and recommend value.

About ILIM value,

Vilim as default 4.6V, Kilim as 2500 Aohm

Customer provide Iin as 500mA,

And we will get Rilim 28.7kohm, is my calculation correct?

over 1 year ago

0 Garrett Kreger over 1 year ago

TI__Mastermind 31910 points

Hi Oliver,

Please see my comments below.

Oliver Lin said:
Do we support other TS resistor value? Or 10kohm is only and recommend value.

Are you asking about the NTC thermistor being a 10kohm thermistor or are you asking about RT1 and RT2 resistors for the TS resistor network?

For ILIM resistor RILIM should be 5kohms to set 500mA input current limit. [500mA = 2500/5000]

Best Regards,

Garrett

0 Oliver Lin over 1 year ago in reply to Garrett Kreger

TI__Expert 4475 points

I am asking about the NTC thermistor, thank you.

0 Garrett Kreger over 1 year ago in reply to Oliver Lin

TI__Mastermind 31910 points

Hi Oliver,

We strongly recommend the customer use a 10kohm NTC in their design as the TS function was designed to specifically work with a 10kohm NTC such as a 103AT thermistor.

Best Regards,

Garrett

Power management

Power management forum

BQ25628: Design parameter question