BQ76PL455APFCT datasheet(10/125 Pages) TI1

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bq76PL455A

SLUSCL0A – SEPTEMBER 2016 – REVISED OCTOBER 2016

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6.11 ADC: VSENSEn Cell Measurement Inputs

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VCELL_VR

Input voltage range

VCELL= VSENSEn – VSENSEn–1, n= 1

to 16

4.95

VCHERR25NB

Total Channel Measurement Accuracy at 25°C

VSENSE = 3.6 V

±0.75

VCHERR

Total Channel Measurment Accuracy,

temperature range of 0°C to 65°C

(1)(2)

VSENSE = 1.5 V

–1.50

1.50

VSENSE = 2.0 V

–2.00

2.00

VSENSE = 3.3 V

–3.25

3.25

VSENSE = 3.6 V

–3.50

3.50

VSENSE = 4.2 V

–3.90

3.90

VSENSE = 4.5 V

–4.00

4.00

VCHERR

Total Channel Measurment Accuracy,

temperature range of –40°C to 85°C

(1)(2)

VSENSE = 1.5 V

–2.85

2.85

VSENSE = 2.0 V

–3.00

3.00

VSENSE = 3.3 V

–4.75

4.75

VSENSE = 3.6 V

–5.00

5.00

VSENSE = 4.2 V

–5.50

5.50

VSENSE = 4.5 V

–5.75

5.75

ISENSE_SEL

(3)(4)

VSENSEn input current n = 1 to 16

VSENSEn–1 pin; on selected channel

7.6

µA

ISENSE_NSEL

Channel not selected

< ±100

ISENSE_SD

VSENSEn input current in

SHUTDOWN Mode

< ±100

RSENSE_SEL

(4)

VSENSE input resistance

Channel selected for conversion,

measured differentially

[VSENSEn–VSENSE(n–1)]

MΩ

OWDSR

Open-wire detection shunt resistance

Open-wire test mode, TSTCONFIG[4]

= 1

all odd (CBENBL = 0xAA); or all even

(CBENBL=0x55) cell squeeze resistors

on (alternate resistors only)

kΩ

LT_DriftVCHAN

Long-term drift (total channel path)

VSENSE = 4.5 V, TA = 65°C

(5)

18.47

ppm/ 1000

hours

VSENSE = 4.5 V, TA = 105°C

(6)

50.24

VADC_REF_25

ADC reference

2.5

ERRADC_REF_25

ADC reference error

0°C

≤ TA ≤ 65°C

–2.5

2.5

–40°C

≤ TA ≤ 85°C

–3.5

3.5

(1) Error measured with averaging enabled.

(2) User adjustable Gain and Offset registers are provided for further error trim at VSGAIN and VSOFFSET, respectively.

(3) When the bq76PL455A is in IDLE power mode, but not converting any ADC input channel, the part idles the multiplexer on the highest

channel enabled for conversions in the CHAN register.

(4) The current into VSENSEn = ISENSE_SEL + VCELL/RSENSE_SEL.

(5) Computed from the first 500-hour operating life test at a stress temperature of 65°C.

(6) Computed from the first 500-hour operating life test at a stress temperature of 105°C.

6.12 ADC: VMODULE Input

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VMODULE_VR

Input voltage range

Measured from TOP to GND (AGND1)

VTOP MIN

VTOP MAX

VMODULE_ERR85

Total error from all internal sources

TA = –40°C to 85°C

–450

±100

450

(1)

Specified by design, not tested in production.

(2)

Calculated and statistically projected worst case from characterization data. Not tested in production.

6.13 ADC: AUXn General Purpose Inputs

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VAUX_VR

Input voltage range(1)

VP/VDIG = 5.3 V

VAUXERR65

Total AUX Channel Measurement

Accuracy(2)

VAUX = 0.05 V, 0°C

≤ TA ≤ 65°C

–3

0.1

VAUX = 4.95 V, 0°C

≤ TA ≤ 65°C

–10

0.1

VAUXERR85

Total AUX Channel Measurement

Accuracy(2)

VAUX = 0.05 V, –40°C

≤ TA ≤ 85°C

–4.5

0.1

4.5

VAUX = 4.95 V, –40°C

≤ TA ≤ 85°C

–12.5

0.1

12.5

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