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BQ27743 データシート(PDF) 9 Page - Texas Instruments

部品番号 BQ27743
部品情報  Single-Cell Li-Ion Battery Fuel Gauge with Programmable Hardware Protection
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

BQ27743 データシート(HTML) 9 Page - Texas Instruments

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SLUSCM0A – JUNE 2017 – REVISED SEPTEMBER 2018
Product Folder Links: bq27743
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Copyright © 2017–2018, Texas Instruments Incorporated
7.13 Short-Circuit in Discharge (SCD)
TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VSCD
SCD detection voltage
threshold
TA = 25°C
VSRN – VSRP
VSCD – 3
VSCD
VSCD + 3
mV
TA = –20°C to 60°C
VSRN – VSRP
0.98 × VSCD
3.125
VSCD
1.02 × VSCD +
3.125
TA = –40°C to 85°C
VSRN – VSRP
0.98 × VSCD
3.5
VSCD
1.02 × VSCD +
3.5
tSCD
SCD delay time
TA = –40°C to 85°C
tSCD – 30%
tSCD
tSCD + 30%
µs
7.14 Low Voltage Charging
TA = 25°C, CREG25 = 1.0 µF, and VVPWR = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VLVDET
Voltage threshold for low-voltage charging
detection
TA = –40°C to 85°C
1.4
1.55
1.7
V
7.15 Internal Temperature Sensor Characteristics
TA = –40°C to 85°C, 2.4 V < VREG25 < 2.6 V
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
G(TEMP)
Temperature sensor voltage gain
–2
mV/°C
(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.
7.16 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
Operating frequency
8.389
MHz
fEIO
Frequency error(1) (2)
TA = 0°C to 60°C
–2.0%
0.38%
2.0%
TA = –20°C to 70°C
–3.0%
0.38%
3.0%
TA = –40°C to 85°C
–4.5%
0.38%
4.5%
tSXO
Start-up time(3)
TA = –40°C to 85°C
2.5
5
ms
(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.
7.17 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
TYP
MAX
UNIT
f(LOSC)
Operating frequency
32.768
kHz
f(LEIO)
Frequency error(1) (2)
TA = 0°C to 60°C
–1.5%
0.25%
1.5%
TA = –20°C to 70°C
–2.5%
0.25%
2.5%
TA = –40°C to 85°C
–4.0%
0.25%
4.0%
t(LSXO)
Start-up time(3)
TA = –40°C to 85°C
500
μs
7.18 Integrating ADC (Coulomb Counter) Characteristics
TA = –40°C to 85°C, 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
VSR_IN
Input voltage range, VSRN and VSRP
VSR = VSRP – VSRN
VVPWR – 0.125
VVPWR + 0.125
V
tSR_CONV
Conversion time
Single conversion
1
s


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