BQ24780S: EN_IDCHG_REG

K.Yaita

Part Number: BQ24780S

Hi Team,

The datasheet shows the following in page 34.
>Internal discharge current limit is the lower one between the voltage set by DischargeCurrent(), and the voltage on ILIM pin.

Does EN_IDCHG_REG=0 disable the discharge current limit feature above?
I would like to know if discharge current limit set by ILIM pin is also disabled or not.

Best Regards,
Yaita / Japan disty

over 5 years ago

0 Wang5577 over 5 years ago

TI__Guru 56650 points

Yaita,

EN_IDCHG_REG=0 disables the discharge current register limit and ILIM pin current limit. ILIM pin can still disable the converter when it is pulled low.

0 K.Yaita over 5 years ago in reply to Wang5577

Guru 29690 points

Hi Wang-san,

Thank you always for your kind support.

I believe discharge current regulation is applied not only in boost mode when EN_IDCHG_REG=1.
Is my understanding correct?
The datasheet shows th following so I would like to ask it just in case.
-----------------------------------

-----------------------------------

Best Regards,
Yaita

0 Wang5577 over 5 years ago in reply to K.Yaita

TI__Guru 56650 points

Yaita,

I checked EN_IDCHG_REG today. When EN_IDCHG_REG=0 disables the discharge current register limit and ILIM pin current limit. ILIM pin can still disable the converter when it is pulled low.

0 K.Yaita over 5 years ago in reply to Wang5577

Guru 29690 points

Hi Wang-san,

Thank you for your support.
I understand EN_IDCHG_REG=0 (default at POR) disables both discharge current register limit and ILIM pin current limit.

Best Regards,
Yaita

0 Wang5577 over 5 years ago in reply to K.Yaita

TI__Guru 56650 points

Yaita,

Please start with a new post if you have more questions. The extra question can be easily missed after the original answer is in "Resolved" status.

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BQ24780S: EN_IDCHG_REG