BQ24038: 0.22uF cap between BAT and ISET1.

Dexter Choi

Expert 2795 points

Part Number: BQ24038

Dear Sir,

If it does not add 220nF when the charge current is under 300mA, any side effect?

please let me know advise me.

over 3 years ago

0 Anthony P Pham over 3 years ago

TI__Mastermind 23220 points

Hi Dexter,

It is not required but as stated, it improves operation at low current charge settings.

0 Dexter Choi over 3 years ago in reply to Anthony P Pham

Expert 2795 points

Dear Anthony,

Thank you for your reply.

could you please explain detail which point improve operation.

We have problem to be changed charging current after recovery DPPM mode at low charge current(300mA).

please advise me any comment.

0 Anthony P Pham over 3 years ago in reply to Dexter Choi

TI__Mastermind 23220 points

Hi Dexter,

Is this the same issue as we've previously discussed?

See: BQ24038: changed charge current after recovered DPPM mode

I'd like to update and say that this issue is still be looking into and I have performed tests with EVMs that do not reflect the issue that the customer had seen.

I will look into the point improve operation of the capacitor and reply when I have the information.

0 Dexter Choi over 3 years ago in reply to Anthony P Pham

Expert 2795 points

Dear Anthony,

Could you let me know detail information about capacitor.

My customer will order to make PCB tomorrow. so it need your comment ASAP.

looking forward your reply.

Thanks.

0 Anthony P Pham over 3 years ago in reply to Dexter Choi

TI__Mastermind 23220 points

Hi Dexter,

The capacitor will add stability when the charge current is set for low charge currents such as the 100mA to 10mA range.

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BQ24038: 0.22uF cap between BAT and ISET1.