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| BQ27350 Datasheet, PDF (5/33 Pages) Texas Instruments – Single Cell Li-Ion Battery Manager With Impedance Track Fuel Gauge Technology | |||
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bq27350
Single Cell Li-Ion Battery Manager
With Impedance Track Fuel Gauge Technology
SLUS754 â MARCH 2007
3.5 LOW FREQUENCY OSCILLATOR
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
f(LOSC)
f(LEIO)
t(LSXO)
Operating frequency
Frequency error (1)(2)
Start-up time(3)
TA = 0°C to 60°C
TA = â20°C to 70°C
TA = â40°C to 85°C
â1.5%
â2.5%
â4.0%
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 VCC = 2.5V, TA = 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%.
UNIT
kHz
µs
3.6 HIGH FREQUENCY OSCILLATOR
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 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)
TA = 0°C to 60°C
TA = â20°C to 70°C
TA = â40°C to 85°C
â2.0%
â3.0%
â4.5%
4.194
0.25%
0.25%
0.25%
2.5
2.0%
3.0%
4.5%
5
(1) The frequency error is measured from 4.194 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at VCC = 2.5V, TA = 25°C.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%.
UNIT
MHz
ms
3.7 INTEGRATING ADC (COULOMB COUNTER) CHARACTERISTICS
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
V(SR)
Input voltage range, V(SRN) and V(SRP)
Resolution
V(SR) = V(SRN) â V(SRP)
â0.20
0.20
16
V(SROS)
INL
Input offset
Integral nonlinearity error
After Auto-Calibration
10
±0.007 ±0.034
ZADC_IN Effective input resistance
2.5
UNIT
V
bits
µV
% FSR
Mâ¦
3.8 ADC (TEMPERATURE AND CELL VOLTAGE) CHARACTERISTICS
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX
Input voltage range
â0.2
1
Conversion time
31.5
Effective resolution
14
15
Effective input resistance
8
UNIT
V
ms
bits
Mâ¦
3.9 I2C-COMPATIBLE INTERFACE TIMING CHARACTERISTICS
TA = â40°C to 85°C, 2.4 V < VCC < 2.6 V; Typical Values at TA = 25°C and VCC = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX
tr
SCL/SDA rise time
tf
SCL/SDA fall time
tw(H)
SCL pulse width (high)
1
300
4
UNIT
µs
ns
µs
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ELECTRICAL SPECIFICATIONS
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