STC3117 datasheet(7/34 Pages) STMICROELECTRONICS

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STC3117

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 4 s in

voltage mode

µA

Average value over 4 s in

mixed mode

ISTBY

Current consumption in standby

Standby mode,

inputs = 0 V

BATD_PU bit = 0

IPDN

Current consumption in power-down

VCC < UVLOTH,

inputs = 0 V

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

Current sensing

Vin_gg

Input voltage range

-40

+40

IIN

Input current

500

ADC_res

AD converter granularity

5.88

µV

ADC_offset

AD converter offset

CS = 0 V

-3

LSB

ADC_time

AD conversion time

500

ADC_acc

AD converter gain accuracy at full

scale (using external sense resistor)

° C0.5

Over temperature range

FOSC

Internal time base frequency

32768

Osc_acc

Internal time base accuracy

° C, VCC = 3.6 V

Over temperature and

voltage ranges

2.5

Cur_res

Current register LSB value

5.88

µV

Battery voltage and temperature measurement

Vin_adc

Input voltage range

VCC = 4.5 V

4.5

LSB

LSB value

Voltage measurement

2.20

Temperature measurement

°C

ADC_time

AD conversion time

250

Volt_acc

Battery voltage measurement accuracy

2.7 V < Vin < 4.5 V,

VCC = Vin, 25 ° C

-0.25

+0.25

Over temperature range

-0.5

+0.5

Temp_acc

Internal temperature sensor accuracy

-3

°C

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