Other Parts Discussed in Thread: BQ24040, BQ24080, BQ24010
Hello Team,
My customer is has noticed that the LED between CHG and OUT is not illuminating when current is being supplied to the battery. Therefore, it would seem as though the internal FET is not going to ground when the device is charging.
They are trying to use this pin to directly indicate the charge status.
Connection are as follows
1 TS – no connection
2 Out- VCC for battery
3 CHG – LED – Resistor – VCC USB
4 ISET – 680 Ohm to ground
5 GND – GND
6 VIN- VCC USB decoupled
Added 10k at TS
- Then charging LED worked
- Tried on another board and the LED did not light when charging
Also, they manually cycled the TS pin and did get the CHG pin to go low and illuminate the LED. Unfortunately, it is not reliably turning on, so they wanted to see if we can provide some guidance on what may be going on here.
Best Regards,
Javier Palomo
