BQ24090 Charging LED Blinking on USB Connection

Prodigy 175 points

Other Parts Discussed in Thread: BQ24090

During my testing, the charging LED (Pin 8) started to blink whenever I connect the USB. What does this mean?

http://youtu.be/tjFqX3STfJY

over 12 years ago

0 Charles Mauney over 12 years ago

TI__Mastermind 31120 points

The charge LED indicates when in charge mode so a flashing LED indicates that it is going in and out of charge mode.

Check the 5V input and make sure it is not dropping out. Adjust the ILIM resistor so the charger can't pull more than the USB source can supply.

0 K. over 12 years ago in reply to Charles Mauney

Prodigy 175 points

Charles Mauney said:

The charge LED indicates when in charge mode so a flashing LED indicates that it is going in and out of charge mode.

Check the 5V input and make sure it is not dropping out. Adjust the ILIM resistor so the charger can't pull more than the USB source can supply.

Thanks!

0 Jared Becker over 9 years ago in reply to Charles Mauney

TI__Genius 11845 points

Hi Charles,

Is there anyway to have the LED blink with the BQ24090 charging correctly?

Thank you,

Jared

Power management

Power management forum

BQ24090 Charging LED Blinking on USB Connection