LTC6802-2 datasheet(3/34 Pages) LINER

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LTC6802-2

68022fa

elecTrical characTerisTics The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. V+ = 43.2V, V– = 0V, unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

DC Specifications

VACC

Measurement Resolution

Quantization of the ADC

1.5

mV/Bit

ADC Offset Voltage

(Note 2)

–0.5

0.5

ADC Gain Error

(Note 2)

–0.12

–0.22

0.12

0.22

VERR

Total Measurement Error

(Note 4)

VCELL = 0V

VCELL = 2.3V

VCELL = 3.6V

VCELL = 4.2V

VCELL = 4.6V

VTEMP = 2.3V

VTEMP = 3.6V

VTEMP = 4.2V

–2.8

–5.1

–4.3

–7.9

–5

–9.2

–5.1

–7.9

–9.2

0.8

±8

2.8

5.1

4.3

7.9

9.2

5.1

7.9

9.2

VCELL

Cell Voltage Range

Full-Scale Voltage Range

VCM

Common Mode Voltage Range Measured

Relative to V–

Range of Inputs Cn for <0.25% Gain Error, n = 3 to 11

Range of Input C3 for <1% Gain Error

Range of Input C2 for <0.25% Gain Error

Range of Input C1 for <0.25% Gain Error

3.7

1.8

1.2

5 • n

Overvoltage (OV) Detection Level

Programmed for 4.2V

4.182

4.200

4.218

Undervoltage (UV) Detection Level

Programmed for 2.3V

2.290

2.300

2.310

Die Temperature Measurement Error

Error in Measurement at 125°C

°C

VREF

Reference Pin Voltage

RLOAD = 100k to V–

3.020

3.015

3.065

3.110

3.115

Reference Voltage Temperature

Coefficient

ppm/°C

Reference Voltage Thermal Hysteresis

25°C to 85°C and 25°C to –40°C

100

ppm

Reference Voltage Long-Term Drift

ppm/√kHr

VREG

Regulator Pin Voltage

10 < V+ < 50, No Load

ILOAD = 4mA

4.5

4.1

5.0

4.8

5.5

Regulator Pin Short-Circuit Current Limit

Supply Voltage, V+ Relative to V–

VERR Specifications Met

Timing Specifications Met

Input Bias Current

In/Out of Pins C1 Through C12

When Measuring Cells

When Not Measuring Cells

–10

µA

Supply Current, Active

Current Into the V+ Pin When Measuring Voltages with

the ADC

0.8

1.1

1.2

Supply Current, Monitor Mode

Average Current Into the V+ Pin While Monitoring for

UV and OV Conditions

Continuous Monitoring (CDC = 2)

Monitor Every 130ms (CDC = 5)

Monitor Every 500ms (CDC = 6)

Monitor Every 2 Seconds (CDC = 7)

800

225

150

100

µA

IQS

Supply Current, Idle

Current Into the V+ Pin When Idle

All Serial Port Pins at Logic ‘1’

37.5

32.5

62.5

82.5

87.5

µA

LTC6802-2 Datasheet(PDF) 3 Page - Linear Technology

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