SW6008

5V/3.1A Type-C Solution Power Bank

Copyright © 2022, ZHUHAI ISMARTWARE TECHNOLOGY CO., LTD.

May, 2022 - DS065_v1.3

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9.8. Fuel Gauge

The SW6008 integrates coulometer to obtain accurate battery capacity.

The coulometer supports battery maximal capacity self-learning, and can learn the battery current

maximal capacity in one complete charge cycle .

The battery initial capacity can be set by a resister which connecting LED5/CSET pin to ground. The

relation between initial capacity Cset and resister Rcset is:

Rset=( Cset +2000 )*5/3

While Cset unit is mAh, and Rset unit is Ω.

The constant charge time can be set by register in I2C mode, and set by LED3/IRQ pin in segment/led

mode.

9.9. ADC

The SW6008 integrates 12 bit ADC, and samples VOUT voltage/IOUT current/battery voltage/NTC

voltage/chip temperature.

ADC channel

Range

Step

VOUT voltage

0~16.384V

4mV

IOUT current

0~6.4A

25/16mA

Battery voltage

0~4.915V

1.2mV

NTC voltage

0~4.505V

1.1mV

Chip temperature

-100~200℃

1/6.82℃

9.10. NTC Function

The SW6008 integrates NTC function. It monitors battery temperature and protects when battery

temperature is abnormal. NTC Pin will source a current to a NTC thermistor of 103AT, and measure

the voltage to calculate battery temperature. NTC Pin will source 80uA for higher accuracy when NTC

thermistor is in low resistance, and 40uA/20uA for wider range in high resistance. It sources 80uA in

default mode. While sourcing 80uA, When NTC voltage is higher than 1.764V, it changes to 40uA.