X3101V28 Intersil, X3101V28 Datasheet - Page 9

• Manufacturer Part Number: X3101V28
• Description: IC PROTECT/MONITOR 3CELL 28TSSOP
• Manufacturer: Intersil

Specifications of X3101V28

• Function: Battery Monitor
• Battery Type: Lithium-Ion (Li-Ion)
• Voltage - Supply: 6 V ~ 24 V
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Configuration Register
The X3100 and X3101 can be configured for specific user
requirements using the Configuration Register.
Overcharge Voltage Settings
VOV1 and VOV0 control the cell over-charge level. See
section “Over-charge Protection” on page 14.
TABLE 4. OVERCHARGE VOLTAGE THRESHOLD SELECTION
X3100 Default = 33H; X3101 Default = 03H.
12 to 13
14 to 15
X3100 Default = C0H; X3101 Default = 40H.
VOV1
10 to11
CONFIGURATION REGISTER
BIT(s)
0 to 5
8 to 9
CELLN
15
TABLE 1. CONFIGURATION REGISTER FUNCTIONALITY
TABLE 3. CONFIGURATION REGISTER—LOWER BYTE
6
7
TABLE 2. CONFIGURATION REGISTER—UPPER BYTE
VOV1
7
0
0
1
1
VOV0
14
VOC1-VOC0
VCE1-VCE0
VUV1-VUV0
VOV1-VOV0
BITS
SWCEN
SWCEN
CELLN
NAME
VUV1
6
–
13
VOV0
0
1
0
1
VUV0
5
12
x
Select overcharge voltage threshold
(don’t care)
Switch Cell Charge Enable threshold
function ON/OFF
Set the number of Li-ion battery cells
used (3 or 4)
Select Cell Charge Enable threshold
Select overcurrent threshold
Select overdischarge (under voltage)
threshold
9
VOC1 VOC0
4
x
V
V
V
V
11
OV
OV
OV
OV
= 4.20 (Default)
= 4.25
= 4.30
= 4.35
3
x
OPERATION (V)
FUNCTION
10
2
x
VCE1
9
1
x
VCE0
X3100, X3101
8
0
x
Overdischarge Settings
VUV1 and VUV0 control the cell over-discharge (under
voltage threshold) level. See section “Over-discharge
Protection” on page 16.
Overcurrent Settings
VOC1 and VOC0 control the pack over-current level. See
section “Over-Current Protection” on page 19.
TABLE 6. OVERCURRENT THRESHOLD VOLTAGE SELECTION
Cell Charge Enable Settings
VCE1, VCE0 and SWCEN control the pack charge enable
function. SWCEN enables or disables a circuit that prevents
charging if the cells are at too low a voltage. VCE1 and VCE0
select the voltage that is recognized as too low. See section
“Sleep Mode” on page 16.
TABLE 8. CELL CHARGING THRESHOLD VOLTAGE
CONFIGURATION REGISTER
CONFIGURATION
VUV1
CONFIGURATION REGISTER
TABLE 5. OVERDISCHARGE THRESHOLD SELECTION.
REGISTER BITS
CONFIGURATION
REGISTER BITS
0
0
1
1
VOC1
VCE1
0
0
1
1
0
0
1
1
TABLE 7. CELL CHARGE ENABLE FUNCTION
SWCEN
0
1
SELECTION
BITS
VUV0
BITS
0
1
0
1
VOC0
VCE0
0
1
0
1
0
1
0
1
(X3100 default)
Charge enable function: ON
Charge enable function: OFF
V
V
V
V
UV
UV
UV
UV
X3100
= 1.95V
= 2.05V
= 2.15V
= 2.25V
V
V
V
V
V
V
V
V
OPERATION
CE
CE
CE
CE
OC
OC
OC
OC
OPERATION
= 0.5V
= 0.80V
= 1.10V
= 1.40V (Default)
= 0.075V (Default)
= 0.100V
= 0.125V
= 0.150V
OPERATION
OPERATION
(X3101 default)
V
V
V
V
UV
UV
UV
UV
X3101
January 3, 2008
= 2.25V
= 2.35V
= 2.45V
= 2.55V
FN8110.1