ATA6871 ATMEL Corporation, ATA6871 Datasheet - Page 13

• Manufacturer Part Number: ATA6871
• Description: Li-ion Battery Management Monitoring Emergency and Backup Circuit
• Manufacturer: ATMEL Corporation

Table 7-5.
7.4
7.4.1
7.4.2
9123B–AUTO–07/09
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
No. Parameters
4.1
4.2
4.3
4.4
4.5
4.6
Overtemperature
detection on threshold
Overtemperature
detection off threshold
Overtemperature
detection hysteresis
Resistor Divider
Input Current
Debouncing Time
ATA6871 Configuration
Device Position
Number of Cells Configuration
Electrical Characteristics
The ATA6871 can be cascaded up to 16 times in one string. The input pins CHIPONE and
CHIPLAST define the first and the last IC in a string.
Table 7-6.
The ATA6871 can work with either four, five, or six cells. This can be programmed with the input
pins CONF0 and CONF1. When used with 5 cells, the inputs MBAT5 and 6 must be connected
together, when used with 4 cells the inputs MBAT4, MBAT5 and MBAT6 must be connected
together (see also
Table 7-7.
CHIPONE
CONF1
Test Conditions
V
TEMP_IN
0
0
1
1
0
0
1
1
=1.65V
CONF0
Device Position
Cells Configuration
CHIPLAST
0
1
0
1
Figure 7-3
0
1
0
1
TEMP_IN
TEMP_IN
TEMP_IN
TEMP_IN
4 cells configuration
5 cells configuration
Do not use, reserved for test purposes
6 cells configuration
Configuration
Pin
Configuration
ICs between the first and the last IC (up to 14 ICs)
Last cascaded chip, connected to power down optocoupler
First chip in a string (master)
First and last chip: (if only one IC is used per string)
to
Figure
R
ΔV
NTC
V
V
R
Symbol
t
I
Debounce
TEMP_IN
TEMP_IN
TEMP_IN
Divider
TEMP_IN
7-5).
+ R
=
Rref
VDD/2 –
VDD/2 –
100 mV
50 mV
Min.
0.4
30
3
1
ATA6871 [Preliminary]
VDD/2 +
VDD/2
50 mV
Typ.
Notes
Over/undervoltage comparators
between MBAT4,5 and MBAT6 are
disabled
Over/undervoltage comparator
between MBAT5 and MBAT6 is
disabled
VDD/2 +
VDD/2 +
www.DataSheet4U.com
100 mV
150 mV
Max.
1000
0.6
3
Unit
mV
kΩ
µA
V
V
s
Type*
D
A
A
A
A
A
13