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| BQ27425-G2_15 Datasheet, PDF (6/39 Pages) Texas Instruments – Fuel Gauge With Integrated Sense Resistor | |||
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bq27425-G2
SLUSB23B â OCTOBER 2012 â REVISED JUNE 2015
7.8 Integrated Sense Resistor Characteristics
TA = â40°C to 85°C; typical values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
SRXRES
Resistance of Integrated Sense
Resistor from SRX to VSS(1)(2)
TA = 25°C
10
Long term RMS, average device
utilization.
ISRX
Recommended Sense Resistor input Peak RMS current, 10% device
current (1) (3)
utilization. (3)
Peak pulsed current, 250 ms
maximum, 1% device utilization.(3)
(1) Specified by design. Not tested in production.
(2) Firmware compensation applied for temperature coefficient of resistor.
(3) Device utilization is the long term usage profile at a specific condition compared to the average condition.
7.9 ADC (Temperature and Cell Measurement) Characteristics
TA = â40°C to 85°C; typical values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
VIN(ADC)
GTEMP
tADC_CONV
Input voltage
Temperature sensor voltage gain
Conversion time
Resolution
0.05
â2
14
VOS(ADC)
ZADC
Ilkg(ADC)
Input offset
Effective input resistance (BAT)(1)
Input leakage current(1)
Not measuring cell voltage
Measuring cell voltage
TA = 25°C
1
8
100
(1) Specified by design. Not tested in production.
7.10 EEPROM Memory Characteristics
TA = â40°C to 85°C; typical values at TA = 25°C and VREGIN = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
Array Size
Data retention(1)
Programming write cycles(1)
256
10
100K
(1) Specified by design. Not production tested
www.ti.com
MAX
UNIT
mâ¦
2000 mA
2500 mA
3500 mA
MAX
1
125
15
0.3
UNIT
V
mV/°C
ms
bits
mV
Mâ¦
kâ¦
μA
MAX
UNIT
bytes
years
cycles
6
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