PCA9420 Charger

[teruteru5678]

I am developing a wearable device using the PC9420 and RT6 series.
It runs on a battery, so I need to charge it.

Question
1.After switching from MODE0 to standby with PWR_DN_EN=1, is it possible to charge it by inputting 5V to VIN?

2.After switching to standby with PWR_DN_EN=1, I would like to turn on the LED when charging is complete. Is this possible if I use the INT pin?
I would like the LED to light only when charging is complete.
Thank you in advance.

[guoweisun]

Hi teruteru5678

Question
1.After switching from MODE0 to standby with PWR_DN_EN=1, is it possible to charge it by inputting 5V to VIN?

[gw]do you mean enable charger function under power down status?

Thanks!

BR

[teruteru5678]

Thank you for your reply.

Yes, that's right.

I would like to be able to charge the device even when it's turned off.

I understand that the device is turned off when it detects that it's ON and sets PWR_DN_EN=1,

but is this done incorrectly?

[guoweisun]

Hi 

I will test it next this function and give you feedback ASAP!

[teruteru5678]

Thank you.

I checked the data sheet and understood that it can be charged using ShipMode.

Do you generally use ShipMode to turn the power off (to save power)?

If so, I will use ShipMode.

[guoweisun · Accepted solution]

Hi Teruteru

Exactly we often recommend to use ship mode getting the charger active.

condition:

SHIP_EN=1 AND
VIN present AND
ON=1 AND
OPERATION_SEL_FROM_SHIPMODE=1