Quantcast
Viewing all articles
Browse latest Browse all 262198

BQ24072: Charging stopped and CHG pin is blinking

Part Number:BQ24072

I have a BQ24072 with pulldown of:

47k on TMR

1.2k on ILIM

1.8k on ISET

CE(negated) connected to GND

TD connected to GND

EN1 to GND

EN2 to OUT

PGOOD and CHG pulled up with 10k to OUT

I put 10 devices on recharge but after some hours all of them have not charged the battery, PGOOD is low and CHG is blinking with period about 1 second. 

The voltage on OUT is 4.4V constant. The voltage on IN is 5v constant. Battery voltage (rated 3.7V-1.0Ah) is 3.6V

All the devices were connected to an USB hub that supplies 5V 8.0A.

I can't find the condition happened to enter this state. 

PS: it restarts individually by disconnecting and re.connecting the USB cable


Viewing all articles
Browse latest Browse all 262198

Trending Articles