LTC6802-2
4
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 (V
ERR
) 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 V
CELL
> 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
t
CYCLE
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
t
1
SDI Valid to SCKI Rising Setup
l
10 ns
t
2
SDI Valid to SCKI Rising Hold
l
250 ns
t
3
SCKI Low
l
400 ns
t
4
SCKI High
l
400 ns
t
5
CSBI Pulse Width
l
400 ns
t
6
SCKI Rising to CSBI Rising
l
100 ns
t
7
CSBI Falling to SCKI Rising
l
100 ns
t
8
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
V
IH
Digital Voltage Input High
l
2 V
V
IL
Digital Voltage Input Low
l
0.8 V
V
OL
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 T
A
= 25°C. V
+
= 43.2V, V
–
= 0V, unless otherwise noted.
Note 4: V
CELL
refers to the voltage applied across the following pin
combinations: Cn to Cn – 1 for n = 2 to 12, C1 to V
–
. V
TEMP
refers to the
voltage applied from V
TEMP1
or V
TEMP2
to V
–
Note 5: These absolute maximum ratings apply provided that the voltage
between inputs do not exceed their absolute maximum ratings.
