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| BQ27546-G1 Datasheet, PDF (6/38 Pages) Texas Instruments – nullSingle-Cell Li-Ion Battery Fuel Gauge | |||
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bq27546-G1
SLUSC53A â MAY 2015 â REVISED DECEMBER 2015
www.ti.com
8.10 Integrating ADC (Coulomb Counter) Characteristics
TA = â40°C to 85°C, C(REG) = 0.47 μF, 2.45 V < V(REGIN) = VBAT < 5.5 V; typical values at TA = 25°C and V(REGIN) = VBAT = 3.6 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VSR
tCONV(SR)
Input voltage range, V(SRN) and V(SRP)
Conversion time
Resolution
VSR = V(SRN) â V(SRP)
Single conversion
â0.125
14
0.125 V
1
s
15 bits
VOS(SR)
INL
ZIN(SR)
Ilkg(SR)
Input offset
Integral nonlinearity error
Effective input resistance(1)
Input leakage current(1)
10
±0.007
2.5
±0.034
0.3
μV
FSR
MΩ
μA
(1) Specified by design. Not production tested.
8.11 ADC (Temperature and Cell Voltage) Characteristics
TA = â40°C to 85°C, C(REG) = 0.47 μF, 2.45 V < V(REGIN) = VBAT < 5.5 V; typical values at TA = 25°C and V(REGIN) = VBAT = 3.6 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VIN(TS)
VIN(BAT)
VIN(ADC)
G(TEMP)
tCONV(ADC)
Input voltage range (TS)
Input voltage range (BAT)
Input voltage range to ADC
Temperature sensor voltage gain
Conversion time
Resolution
VSS â 0.125
VSS â 0.125
0.05
â2.0
14
VCC
V
5V
1V
mV/°C
125 ms
15 bits
VOS(ADC)
Z(TS)
Input offset
Effective input resistance (TS)(1)
bq27546-G1 not measuring external
temperature
1
mV
8
MΩ
Z(BAT)
Effective input resistance (BAT)(1)
bq27546-G1 not measuring cell voltage
bq27546-G1 measuring cell voltage
8
MΩ
100
kΩ
Ilkg(ADC)
Input leakage current
0.3 μA
(1) Specified by design. Not production tested.
8.12 Data Flash Memory Characteristics
TA = â40°C to 85°C, C(REG) = 0.47 μF, 2.45 V < V(REGIN) = VBAT < 5.5 V; typical values at TA = 25°C and V(REGIN) = VBAT = 3.6 V
(unless otherwise noted)
tDR
tWORDPROG
ICCPROG
tDFERASE
tPGERASE
PARAMETER
Data retention(1)
Flash programming write-cycles(1)
Word programming time(1)
Flash-write supply current(1)
Data flash master erase time(1)
Flash page erase time(1)
TEST CONDITIONS
MIN
10
20,000
200
20
TYP MAX UNIT
Years
Cycles
2 ms
5
10 mA
ms
ms
(1) Specified by design. Not production tested.
8.13 HDQ Communication Timing Characteristics
TA = â40°C to 85°C, CREG = 0.47 μF, 2.45 V < VREGIN = VBAT < 5.5 V; typical values at TA = 25°C and VREGIN = VBAT = 3.6 V
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN NOM MAX UNIT
t(CYCH)
t(CYCD)
t(HW1)
Cycle time, host to bq27546-G1
Cycle time, bq27546-G1 to host
Host sends 1 to bq27546-G1
190
μs
190
205 250 μs
0.5
50 μs
6
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Copyright © 2015, Texas Instruments Incorporated
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