BQ27510-G2 Datasheet, PDF (5/38 Pages) Texas Instruments – System-Side Impedance Track™ Fuel Gauge With Direct Battery Connection

bq27510-G2
www.ti.com
SLUS948 – AUGUST 2010
LOW FREQUENCY OSCILLATOR
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
f_OSC
f_EIO
t_SXO
Operating frequency
Frequency error^{(1) (2)}
Start-up time⁽³⁾
T_A = 0°C to 60°C
T_A = –20°C to 70°C
T_A = –40°C to 85°C
–1.5%
–2.5%
-4.0%
32.768
0.25%
0.25%
0.25%
1.5%
2.5%
4.0%
500
(1) The frequency drift is included and measured from the trimmed frequency at V_CC = 2.5 V, T_A = 25°C.
(2) The frequency error is measured from 32.768 KHz.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% of typical oscillator frequency.
UNIT
KHz
ms
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_IN}
t_{SR_CONV}
Input voltage range, V_(SRN) and V_(SRP)
Conversion time
Resolution
V_SR = V_(SRN) – V_(SRP)
Single conversion
–0.125
14
0.125
1
15
V_{SR_OS}
I_NL
Z_{SR_IN}
I_{SR_LKG}
Input offset
Integral nonlinearity error
Effective input resistance⁽¹⁾
Input leakage current⁽¹⁾
10
±0.007 ±0.034
2.5
0.3
(1) Assured by design. Not production tested.
UNIT
V
s
bits
mV
%FSR
MΩ
mA
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_{ADC_IN}
t_{ADC_CONV}
Input voltage range
Conversion time
Resolution
–0.2
1
125
14
15
V_{ADC_OS}
Z_ADC1
Z_ADC2
I_{ADC_LKG}
Input offset
Effective input resistance (TS) ⁽¹⁾
Effective input resistance (BAT)⁽¹⁾
Input leakage current⁽¹⁾
bq27510-G2 not measuring cell voltage
bq27510-G2 measuring cell voltage
1
8
8
100
0.3
(1) Assured by design. Not production tested.
UNIT
V
ms
bits
mV
MΩ
MΩ
kΩ
mA
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
Data retention⁽¹⁾
Flash programming write-cycles ⁽¹⁾
10
20,000
t_WORDPROG)
I_CCPROG)
Word programming time⁽¹⁾
Flash-write supply current⁽¹⁾
2
5
10
(1) Assured by design. Not production tested.
UNIT
Years
Cycles
ms
mA
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