Hi,
I will use STC3100 IC at my circuit. I will use Li-ION AA type Cell in my circuit and I charge my cell externally on charge device. So ı don't use STC3100 while charge status monitoring. I will use STC3100 only monitoring available charge status. So, I applied referance schematic at datasheet ot STC3100 and I used 10mili ohm between GND and (-) of Cell. And also I developed my code and ı am sending debug LOG at below.
My first question is this: I pull approximately 100mA at my circuit but I read 9000mA (9 Amper) from Current registers. At document it says Current Register is 14 Bit (Bit-13 is sign and Bit 0-12 is data) and I read convert only 12 data bit to Decimal and use it inside formula "STC3100_Application_Doc.pdf" page 8. Formula is "current (mA) = current_code* 11.77 / Rsense (mΩ)" But the result is approximately 9000mA. So at which point I have fault, can you inform me?
REG_CHARGE_LOW: 248;REG_CHARGE_HIGH: 127 --- CHARGE: 21864.1093 mA.h
REG_COUNTER_LOW: 113;REG_COUNTER_HIGH: 0 --- COUNTER: 113.0000
REG_CURRENT_LOW: 255;REG_CURRENT_HIGH: 30 --- CURRENT: 9304.1845 mA (????)
REG_VOLTAGE_LOW: 184;REG_VOLTAGE_HIGH: 5 --- VOLTAGE: 3559.9599 mV
REG_TEMPERATURE_LOW: 184;REG_TEMPERATURE_HIGH: 0 --- TEMP: 23.0000 °C
REG_CHARGE_LOW: 247;REG_CHARGE_HIGH: 127 --- CHARGE: 21863.4394 mA.h
REG_COUNTER_LOW: 123;REG_COUNTER_HIGH: 0 --- COUNTER: 123.0000
REG_CURRENT_LOW: 255;REG_CURRENT_HIGH: 30 --- CURRENT: 9304.1845 mA (????)
REG_VOLTAGE_LOW: 184;REG_VOLTAGE_HIGH: 5 --- VOLTAGE: 3559.9599 mV
REG_TEMPERATURE_LOW: 185;REG_TEMPERATURE_HIGH: 0 --- TEMP: 23.0000 °C
Also, to monitoring Li-ION cell (1 Cell), what is your application suggestions? I want to power down my circuit when Cell Voltage is 3.0V at Min. But beucause circuit load pulls current, this voltage value will seem lower than 3.0V. So, is there a reference application steps which you will suggest?
Thanks.
