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LTC6802-2 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC6802-2
Description  Multicell Addressable Battery Stack Monitor
Download  34 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

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LTC6802-2

68022fa
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The ADC specifications are guaranteed by the total measurement
error (VERR) specification.
Note 3: Due to the contact resistance of the production tester, this
specification is tested to relaxed limits. The 20Ω limit is guaranteed by
design.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Discharge Switch On-Resistance
VCELL > 3V (Note 3)
l
10
20
Ω
Temperature Range
l
–40
85
°C
Thermal Shutdown Temperature
145
°C
Thermal Shutdown Hysteresis
5
°C
Timing Specifications
tCYCLE
Measurement Cycle Time
Time Required to Measure 11 or 12 Cells
Time Required to Measure Up to 10 Cells
Time Required to Measure 1 Cell
l
l
11
9.2
1
13
11
1.2
16
13.5
1.5
ms
ms
ms
t1
SDI Valid to SCKI Rising Setup
l
10
ns
t2
SDI Valid to SCKI Rising Hold
l
250
ns
t3
SCKI Low
l
400
ns
t4
SCKI High
l
400
ns
t5
CSBI Pulse Width
l
400
ns
t6
SCKI Rising to CSBI Rising
l
100
ns
t7
CSBI Falling to SCKI Rising
l
100
ns
t8
SCKI Falling to SDO Valid
l
250
ns
Clock Frequency
l
1
MHz
Watchdog Timer Time-Out Period
l
1
2.5
s
Digital I/O Specifications
VIH
Digital Voltage Input High
l
2
V
VIL
Digital Voltage Input Low
l
0.8
V
VOL
Digital Voltage Output Low
Sinking 500µA
l
0.3
V
elecTrical characTerisTics The
l
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.
Note 4: VCELL refers to the voltage applied across the following pin
combinations: Cn to Cn – 1 for n = 2 to 12, C1 to V. VTEMP refers to the
voltage applied from VTEMP1 or VTEMP2 to V
Note 5: These absolute maximum ratings apply provided that the voltage
between inputs do not exceed their absolute maximum ratings.


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