ELECTRICAL CHARACTERISTICS

DC Characteristics

Voltage-Measurement Characteristics

Current-Sense Characteristics

Coulomb-Counter Characteristics

(1) (2)

bq78PL114

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(1)

Operating range

Cells balanced

2.3

4.5

V

Operating-mode current

Measure / report state

250

µA

Standby-mode current

SMBCLK = SMBDAT = L

100

µA

Ship-mode current

30

µA

Extreme cell under voltage

All cells < 2.7 V and any cell < ECUV set

1

µA

shutdown current

point

General I/O pins

0

0.5

V

(2)

General I/O pins

V

General I/O pins

V

General I/O pins

V

(1)

Device remains operational to 1.85 V with reduced accuracy and performancce.

(2)

Does not apply to SMBus pins.

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Measurement range

2.5

4.5

V

Resolution

<1

mV

25°C

±5

Accuracy

mV

0°C to 60°C

±10

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

–0.2

0.2

V

Input offset

±50

µV

Offset drift

0.5

µV/°C

Resolution

18

µV

±0.1%

Full-scale error drift

50

PPM/°C

(1)

Default range. Corresponds to ±10 A using a 10-m

Ω sense resistor. Other gains and ranges are available (eight options).

(2)

After calibration. Accuracy is dependent on system calibration and temperature coefficient of sense resistor.

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

5

nVh

Intergral nonlinearity

0.008%

Snap-to-zero (deadband)

µV

(1)

Shares common input with Current Sense section

(2)

After calibration. Accuracy is dependent on system calibration and temperature coefficient of sense resistor.

(3)

Corresponds to 20 mA using 5-m

Ω sense resistor

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