Texas Instruments BQ27505EVM - BQ27505 System-Side, Single-Cell Impedance Track??? Technology Evaluation Module BQ27505E BQ27505EVM 데이터 시트
제품 코드
BQ27505EVM
Not Recommended for New Designs
SLUS884 – FEBRUARY 2009
www.ti.com
3.3
POWER-ON RESET
T
A
= –40°C to 85°C, typical values at T
A
= 25°C and V
BAT
= 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
IT+
Positive-going battery voltage input at V
CC
2.09
2.20
2.31
V
V
HYS
Power-on reset hysteresis
45
115
185
mV
3.4
INTERNAL TEMPERATURE SENSOR 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
UNIT
G
TEMP
Temperature sensor voltage gain
–2
mV/°C
3.5
HIGH-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
UNIT
f
OSC
Operating frequency
2.097
MHz
T
A
= 0°C to 60°C
–2%
0.38%
2%
f
EIO
Frequency error
(1) (2)
T
A
= –20°C to 70°C
–3%
0.38%
3%
T
A
= –40°C to 85°C
–4.5%
0.38%
4.5%
t
SXO
Start-up time
(3)
2.5
5
ms
(1)
The frequency error is measured from 2.097 MHz.
(2)
The frequency drift is included and measured from the trimmed frequency at V
CC
= 2.5 V, T
A
= 25°C.
(3)
The start-up time is defined as the time it takes for the oscillator output frequency to be within ±3% of typical oscillator frequency.
3.6
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
UNIT
f
LOSC
Operating frequency
32.768
kHz
T
A
= 0°C to 60°C
–1.5%
0.25%
1.5%
f
LEIO
Frequency error
(1) (2)
T
A
= –20°C to 70°C
–2.5%
0.25%
2.5%
T
A
= –40°C to 85°C
–4%
0.25%
4%
t
LSXO
Start-up time
(3)
500
m
s
(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 start-up time is defined as the time it takes for the oscillator output frequency to be within ±3% of typical oscillator frequency.
3.7
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
UNIT
V
SR
Input voltage range, V
(SRN)
and V
(SRP)
V
SR
= V
(SRN)
– V
(SRP)
–0.125
0.125
V
t
SR_CONV
Conversion time
Single conversion
1
s
Resolution
14
15
bits
V
OS(SR)
Input offset
10
m
V
INL
Integral nonlinearity error
±0.007
±0.034
% FSR
Z
IN(SR)
Effective input resistance
(1)
2.5
M
Ω
I
lkg(SR)
Input leakage current
(1)
0.3
m
A
(1)
Specified by design. Not tested in production.
6
ELECTRICAL SPECIFICATIONS
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