BQ24133: STAT PIN SINK CURRENT

Melvin Pereira

Prodigy 95 points

Part Number: BQ24133

Dear sir,

May I know what is the current sink capability of the BQ24133 STAT PIN?

Instead of sourcing the voltage from VREF, it is planned to use the VIN of 15Volts.

thank you

over 2 years ago

0 Michael Emanuel35 over 2 years ago

TI__Mastermind 30025 points

Hello,

We recommend a 10 kOhm pullup to the power rail, and our application schematic recommends a 1.5 kOhm pullup to VREF. Please base your decisions based on those recommendations.

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.

0 Melvin Pereira over 2 years ago in reply to Michael Emanuel35

Prodigy 95 points

Hi!

If we use 10Kohm pullup to the power rail, the current is so small that it may not light up the LED.

in BS24133 evaluation board schematic, the series resistor is 5Kohms.

Can you provide the max current the STAT pin can sink so we can adjust also the LED intensity?

0 Michael Emanuel35 over 2 years ago in reply to Melvin Pereira

TI__Mastermind 30025 points

I am looking into it and will get back to you next week.

Thanks,

Mike Emanuel

0 Michael Emanuel35 over 2 years ago in reply to Michael Emanuel35

TI__Mastermind 30025 points

Hello,

According to the datasheet, the STAT output low saturation voltage is 0.5 V maximum and is tested at 5 mA. That is the test condition in the datasheet and please adjust your resistor accordingly.

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.

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BQ24133: STAT PIN SINK CURRENT