Other Parts Discussed in Thread: BQ27426,
Hello,
My question is about sensing low currents (For coulomb counter):
- Battery – LiFePO4 – 1.1Ah.
- Charge current – 100mA.
- Discharge current - 100uA .
- If i use Rsense of 0.5 Ohm:
- In charge Vsense= 50mV.
- In discharge Vsense= 50uV.
As I Understand from the datasheet (table 6.14), the minimum Sense Voltage is 3.71uV. So I can measure 50uV (If it is correct, I can measure 100uA and 100mA with the same Rsense).
In this case coloumb counter function will operate with error of 3.71uv/50uv = 7.42% (In the discharge period).
Is it right?
Best Regards,
Arkadi
