STC3100 datasheet(5/21 Pages) STMICROELECTRONICS

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STC3100

Electrical characteristics

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Electrical characteristics

Table 4.

Electrical characteristics (2.7 V < VCC < 4.5 V, -20° C to 70° C)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Supply

ICC

Operating current consumption

Average value over 4s

100

Istby

Current consumption in standby

standby mode, inputs=0V

Ipdn

Current consumption in power down

VCC < UVLOth, inputs=0V

UVLOth

Undervoltage threshold

(VCC decreasing)

2.5

2.6

2.7

UVLOhyst

Undervoltage threshold hysteresis

100

POR

Power-on reset threshold

(VCC decreasing)

2.0

Gas gauge A/D converter

Vin_gg

Input voltage range

-80

+80

Iin

Input current for CG pin

500

ADC_res

AD converter granularity

12 bits

13 bits

14 bits

47.08

23.54

11.77

ADC_offset

AD converter offset

CG = 0V

12 bits

13 bits

14 bits

-2

-3

LSB

ADC_time

AD conversion time (32768Hz clock)

12 bits

13 bits

14 bits

125

250

500

ADC_acc

AD converter gain accuracy at full scale

° C

over temperature range

0.5

Fosc

Internal time base frequency

Rosc = 200 k

Ω, 0.1%

32768

Osc_acc

Internal time base accuracy

° C, VCC =3.6 V

over temperature and

voltage ranges

2.5

Fosc_ext

External time base frequency range

kHz

Cur_res

Current register LSB value

11.77

Chg_res

Charge register LSB value

(32,768 Hz clock)

=Cur_res*2^12*0.5/3600

6.70

uV.h

Global_

CG_acc

Gas gauge accuracy (not including the

external sense resistor tolerance)

Using internal time base

Using external time base

3.5

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