Datasheet > BQ27Z558

BQ27Z558

更新时间： 2024-03-03 10:10:56

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德州仪器 - TI		/
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描述
Single-cell Impedance Track? technology gas gauge and protection solution

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BQ27Z558 数据手册

BQ27Z558

SLUSFF9 – NOVEMBER 2023

www.ti.com

6.9 Internal Temperature Sensor

Unless otherwise noted, characteristics noted under conditions of T_A= –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

1.65

0.17

TYP

1.73

0.18

MAX

1.8

UNIT

V_TEMPP

Internal temperature sensor voltage

drift

V_(TEMP)

mV/°C

V_TEMPP– V_TEMPN(assured by design)

0.19

6.10 NTC Thermistor Measurement Support

Unless otherwise noted, characteristics noted under conditions of T_A= –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

R_NTRC(PU)

Internal pullup resistance

14.4

21.6

kΩ

Resistance drift over

temperature

R_NTC(DRIFT)

–250

–120

PPM/°C

6.11 Coulomb Counter (CC)

Unless otherwise noted, characteristics noted under conditions of T_A= –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Differential input voltage

range

V_{(CC_IN)}

–0.1

0.1

t_{(CC_CONV)}

Conversion time

Single conversion

1000

3.8

µV

Effective resolution

1 LSB

16-bit, best fit over input voltage

range

Integral nonlinearity

–22.3

5.2

+22.3

+2.6

LSB

Differential nonlinearity

Offset error

16-bit, no missing codes

1.5

1.3

LSB

16- bit post calibration

–2.6

–492

Offset error drift

Gain error

15-bit + sign, post calibration

15-bit + sign, over input voltage range

0.04

131

4.3

0.07 LSB/°C

+492 LSB

Gain error drift

9.8 LSB/°C

MΩ

Effective input resistance

6.12 Analog Digital Converter (ADC)

Unless otherwise noted, characteristics noted under conditions of T_A= –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

–0.2

–8.4

TYP

MAX

UNIT

V_FS= V_REF2

1.0

1.44

5.5

V_{ADC_TS_GPIO}

V_{BAT_MODE}

Input voltage range

V_FS= V_REG18× 2

Battery input voltage

Integral nonlinearity

Differential nonlinearity

Offset error

16-bit, best fit, –0.1 V to 0.8 × V_REF2

16-bit, no missing codes

+8.4

LSB

1.5

1.8

0.02

131

16-bit post calibration⁽¹⁾, V_FS= V_REF2

16-bit, –0.1 to 0.8 × V_FS

–4.2

–492

+4.2

Offset error drift

0.1 LSB/°C

Gain Error

+492

LSB

Gain error drift

16-bit, –0.1 to 0.8 × V_FS

4.5 LSB/°C

Effective input resistance

Conversion time

MΩ

t_{(ADC_CONV)}

11.7

Effective resolution

bits

(1) Factory calibration

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