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bq20z45-R1DBTR Datasheet(PDF) 8 Page - Texas Instruments

Part # bq20z45-R1DBTR
Description  SBS 1.1-Compliant Gas Gauge and Protection Enabled With Impedance Track?
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
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bq20z45-R1DBTR Datasheet(HTML) 8 Page - Texas Instruments

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bq20z45-R1
SLUS992 – DECEMBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted), TA = –40°C to 85°C, V(REG25) = 2.41 V to 2.59 V,
V(BAT) = 14 V, C(REG25) = 1 µF, C(REG33) = 2.2 µF; typical values at TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Effective input resistance(10)
TA = 25°C to 85°C
2.5
M
INTERNAL TEMPERATURE SENSOR
V(TEMP)
Temperature sensor voltage(11)
-2.0
mV/°C
VOLTAGE REFERENCE
Output voltage
1.215
1.225
1.230
V
Output voltage drift
65
PPM/°C
HIGH FREQUENCY OSCILLATOR
f(OSC)
Operating frequency
4.194
MHz
–3%
0.25%
3%
f(EIO)
Frequency error (12) (13)
TA = 20°C to 70°C
–2%
0.25%
2%
t(SXO)
Start-up time(14)
2.5
5
ms
LOW FREQUENCY OSCILLATOR
f(LOSC)
Operating frequency
32.768
kHz
–2.5%
0.25%
2.5%
f(LEIO)
Frequency error(13) (15)
TA = 20°C to 70°C
–1.5%
0.25%
1.5%
t(LSXO)
Start-up time(14)
500
µs
(10) The CC input is a switched capacitor input. Since the input is switched, the effective input resistance is a measure of the average
resistance.
(11) –53.7 LSB/°C
(12) The frequency error is measured from 4.194 MHz.
(13) The frequency drift is included and measured from the trimmed frequency at V(REG25) = 2.5V, TA = 25°C
(14) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%
(15) The frequency error is measured from 32.768 kHz.
8
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Copyright © 2009, Texas Instruments Incorporated
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