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| BQ27741-G1_14 Datasheet, PDF (8/39 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge with Integrated Protection | |||
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bq27741-G1
SLUSBF2 â JULY 2013
www.ti.com
Short-Circuit in Discharge (SCD)
TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VSCD
tSCD
SCD detection voltage
threshold
SCD delay time
TA = 25°C
VSRN â VSRP
TA = â20°C to 60°C
VSRN â VSRP
TA = â40°C to 85°C
VSRN â VSRP
TA = â40°C to 85°C
MIN
VSCD â 3
VSCD â 4.5
VSCD â 4.9
tSCD â 10%
TYP
VSCD
VSCD
VSCD
tSCD
MAX
VSCD + 3
UNIT
mV
VSCD + 4.5
VSCD + 4.9
tSCD + 10%
µs
Low Voltage Charging
TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VLVDET
Voltage threshold for low-voltage charging
detection
TA = â40°C to 85°C
MIN
TYP
MAX UNIT
1.4
1.55
1.7
V
Internal Temperature Sensor Characteristics
TA = â40°C to 85°C, 2.4 V < VREG25 < 2.6 V
PARAMETER
TEST CONDITIONS
G(TEMP) Temperature sensor voltage gain
MIN
TYP
MAX UNIT
â2
mV/°C
High-Frequency Oscillator
2.4 V < VREG25 < 2.6 V; typical values at TA = 25°C and VREG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
fOSC
fEIO
tSXO
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
TA = â40°C to 85°C
â2.0%
â3.0%
-4.5%
8.389
0.38%
0.38%
0.38%
2.5
2.0%
3.0%
4.5%
5
MHz
ms
(1) The frequency error is measured from 2.097 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at VREG25 = 2.5 V, TA = 25°C.
(3) The startup time is defined as the time it takes for the oscillator output frequency to be ±3% of the typical oscillator frequency.
Low-Frequency Oscillator
2.4 V < VREG25 < 2.6 V; typical values at TA = 25°C and VREG25 = 2.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
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
TA = â40°C to 85°C
â1.5%
â2.5%
-4.0%
TYP
32.768
0.25%
0.25%
0.25%
500
MAX
1.5%
2.5%
4.0%
UNIT
kHz
μs
(1) The frequency drift is included and measured from the trimmed frequency at VREG25 = 2.5 V, 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% of the typical oscillator frequency.
8
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Copyright © 2013, Texas Instruments Incorporated
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