BQ27531-G1_16 Datasheet, PDF (6/34 Pages) Texas Instruments – Battery Management Unit Impedance Track Fuel Gauge

bq27531-G1
SLUSBE7C – MARCH 2013 – REVISED JANUARY 2016
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7.10 ADC (Temperature and Cell Measurement) Characteristics
T_A = –40°C to 85°C, 2.4 V < V_CC < 2.6 V; typical values at T_A = 25°C and V_CC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
V_ADC1
Input voltage (TS)
V_SS –
2
0.125
V_ADC2
Input voltage (BAT)
V_SS –
5
0.125
V_IN(ADC)
G_TEMP
Input voltage
Internal temperature sensor voltage
gain
0.05
1
–2
t_{ADC_CONV}
Conversion time
Resolution
125
14
15
V_OS(ADC)
Z_ADC1 ⁽¹⁾
Z_ADC2 ⁽¹⁾
I_lkg(ADC) ⁽¹⁾
Input offset
Effective input resistance (TS)
Effective input resistance (BAT)
Input leakage current
bq27531-G1 not measuring cell voltage
bq27531-G1 measuring cell voltage
1
8
8
100
0.3
(1) Specified by design. Not tested in production.
UNIT
V
V
V
mV/°C
ms
bits
mV
MΩ
MΩ
kΩ
μA
7.11 Integrating ADC (Coulomb Counter) Characteristics
T_A = –40°C to 85°C, 2.4 V < V_CC < 2.6 V; typical values at T_A = 25°C and V_CC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
V_SR
t_{SR_CONV}
Input voltage,
V_(SRP) and V_(SRN)
Conversion time
Resolution
V_SR = V_(SRP) – V_(SRN)
Single conversion
–0.125
14
0.125
1
15
V_OS(SR)
INL
Z_IN(SR) ⁽¹⁾
I_lkg(SR) ⁽¹⁾
Input offset
Integral nonlinearity error
Effective input resistance
Input leakage current
10
±0.007% ±0.034%
2.5
0.3
(1) Specified by design. Not tested in production.
UNIT
V
s
bits
μV
FSR
MΩ
μA
7.12 Data Flash Memory Characteristics
T_A = –40°C to 85°C, 2.4 V < V_CC < 2.6 V; typical values at T_A = 25°C and V_CC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
t_DR ⁽¹⁾
Data retention
10
Flash-programming write
cycles ⁽¹⁾
20000
t_WORDPROG ⁽¹⁾
I_CCPROG ⁽¹⁾
t_DFERASE ⁽¹⁾
Word programming time
Flash-write supply current
Data flash master erase time
2
5
10
200
t_IFERASE ⁽¹⁾
Instruction flash master erase
time
200
t_PGERASE ⁽¹⁾
Flash page erase time
20
(1) Specified by design. Not production tested.
UNIT
Years
Cycles
ms
mA
ms
ms
ms
6
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