BQ4050: How to exit the shutdown mode?

Hello Mike,

I will get back to you on this as soon as possible.

Regards,

Siddharth

Thks a lot!

Waiting your good news!

We wished device can return to normal from the shutdown mode of any types  when press the shutdown pin.

Hi Siddharth:

Did you have some updated information?

Dear Siddharth:

I have one idea that Add a diode +R 1Mohm + Switch between Cell team + and PACK+.

This diode can waken up from the shutdown mode and avoid the Charger connecting to the cell team directly.

R can limit charge current value.

Do you have some good comments? or recommends compenonts type?

Mike.

Hello Mike,

The only way the gauge can exit shutdown mode is by applying a voltage to the Pack pin. 

Your solution with the diode and the switch could work. I'm assuming you would be using the switch to temporarily apply a voltage to the Pack pin?

Regards,

Siddharth

Hello Siddharth:

Do you have good comment for component type?

Whether we can removed 1Mohm R for this application? Only add Diode and Switch?

Hello Mike,

What is the application? There might be other ways of waking up the gauge depending on your application.

If your application only involves the gauge, you would only need to apply voltage on the PACK pin to exit SHUTDOWN. How will you be using the switch and the diode? A simple schematic could be helpful here.

Regards,

Siddharth

Thanks， Siddharth:

I wanted to check one applicaiton.

For entering the shutdown mode automatically, let Gauge into the sleep mode during SCL/SDA low.

If SCL/SDA was still low,  whether it can exit the shutdown even if voltage on PACK pin?

Hello Mike,

We are looking into this and will get back to you as soon as possible.

Regards,

Siddharth