X3100 Datasheet, PDF (2/40 Pages) Xicor Inc. – 3 or 4 Cell Li-Ion Battery Protection and Monitor IC

PIN CONFIGURATION
X3100/X3101 Ordering Codes
Ordering Number
X3100V28
X3101V28
X3100, X3101
VCELL1
CB1
VCELL2
CB2
VCELL3
CB3
VCELL4/VSS*
CB4
VSS
VCS1
VCS2
OVT
UVT
OCT
28 Lead TSSOP
1
28
2
27
3
26
4
25
5
24
6
23
X3100/
7 _X3101 22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
VCC
RGP
RGC
RGO
UVP/OCP
OVP/LMON
CS
SCK
SO
SI
AS2
AS1
AS0
AO
*For X3101, Connect to ground.
VCC Limits
6V to 24V
6V to 24V
Package
28-Lead TSSOP package
28-Lead TSSOP package
Temperature Range
-20°C to +70°C
-20°C to +70°C
PIN NAMES
Pin Symbol
Brief Description
1 VCELL1 Battery cell 1 voltage input. This pin is used to monitor the voltage of this battery cell internally.
The voltage of an individual cell can also be monitored externally at pin AO.
The X3100 monitors 4 battery cells. The X3101 monitors 3 battery cells.
2
CB1 Cell balancing FET control output 1. This output is used to switch an external FET in order to
perform cell voltage balancing control. This function can be used to adjust an individual cell voltage
(e.g. during cell charging). CB1 can be driven high (Vcc) or low (Vss) to switch the external FET
ON/OFF.
3 VCELL2 Battery cell 2 voltage. This pin is used to monitor the voltage of this battery cell internally. The voltage
of an individual cell can also be monitored externally at pin AO.
The X3100 monitors 4 battery cells. The X3101 monitors 3 battery cells.
4
CB2 Cell balancing FET control output 2. These outputs are used to switch an external FETs in order to
perform cell voltage balancing control. This function can be used to adjust individual cell voltages (e.g.
during cell charging). CB2 can be driven high (Vcc) or low (Vss) to switch the external FET ON/OFF.
5 VCELL3 Battery cell 3 voltage. This pin is used to monitor the voltage of each battery cell internally. The
voltage of an individual cell can also be monitored externally at pin AO.
The X3100 monitors 4 battery cells. The X3101 monitors 3 battery cells.
6
CB3 Cell balancing FET control output 3. This output is used to switch an external FET in order to
perform cell voltage balancing control. This function can be used to adjust an individual cell voltage (e.g.
during cell charging). CB3 can be driven high (Vcc) or low (Vss) to switch the external FET ON/OFF.
7 VCELL4/ Battery cell 4 voltage (X3100) Ground (X3101). This pin is used to monitor the voltage of this battery
VSS cell internally. The voltage of an individual cell can also be monitored externally at pin AO.
The X3100 monitors 4 battery cells. The X3101 monitors 3 battery cells. For the X3101 device connect
the VCELL4/VSS pin to ground.
2
FN8110.0
April 11, 2005