BQ24070: STATUS LEDs flicker

Zoe Ko

Expert 3820 points

Part Number: BQ24070

Hi team,

Could you please help the issue in below?

The schematic is as below and the RED and GREEN LEDs (D6) are flicker as the video in below internal link.

The mode pin setting no mater for AC adaptor or USB port are the same with the issue.

Do you have ever seen as the phenomenon and could you provide some suggestions for the issue?

Battery: 3.7V, 1700mAh

Power_IN: 5V, 2A adapter

Thank you!

https://txn.box.com/s/7w85labsyztt5dqc9m4rwe1073r5rw7p

over 5 years ago

0 Anthony P Pham over 5 years ago

TI__Mastermind 23410 points

Hi Zoe,

It looks like the device is flickering between precharge and fast charge. Could you share some waveforms of the battery voltage and current? Also what battery voltage is this occuring at?

Regards,

Anthony Pham

0 Anthony P Pham over 5 years ago in reply to Anthony P Pham

TI__Mastermind 23410 points

Hi Zoe,

Just wanted to check in, any updates?

0 Zoe Ko over 5 years ago in reply to Anthony P Pham

TI__Expert 3820 points

Hi Anthony,

You can close it on E2E.

I will send you a mail when I get the waveform.

Thank you!

Power management

Power management forum

BQ24070: STATUS LEDs flicker