X3101V28 Intersil, X3101V28 Datasheet - Page 17

• 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

Figure 4. Over-discharge Protection Mode—Event Diagram
Table 22. Over-discharge Protection Mode—Event Diagram Description
Event
[0,1)
(1,2)
(2,3)
[1]
[2]
UVP/OCP
OVP/LMON
RGO
Note 1: If SWEN = 0 and V
Note 2: OVP/LMON stays high until the microcontroller writes a “1” to the OVPC bit in the control register. This sets the signal low, which turns on the
Note 3: UVP/OCP stays high until the microcontroller writes a “1” to the UVPC bit in the control register. This sets the signal low, which turns on the
VCC
VCELL
V
Event
UV
discharge FET. The FET cannot be turned on prior to this time.
charge FET. It cannot be turned on prior to this time.
— Charge FET is ON (OVP/LMON = V
— Discharge FET is ON (UVP/OCP = V
— All cell voltages (VCELL
— The device is in normal operation mode (i.e. not in a protection mode).
— The voltage of one or more of the battery cells (V
— The internal over-discharge detection delay timer begins counting down.
— The device is still in normal operation mode
— The internal over-discharge detection delay timer times out, AND V
— The internal over-discharge sense circuitry switches the discharge FET OFF (UVP/OCP = Vcc).
— The charge FET is switched OFF (OVP/LMON = V
— The device has now entered over-discharge protection mode.
— At the same time, the device enters sleep mode (See section “Voltage Regulator” on page 22).
— The power to ALL internal circuits is switched OFF limiting power consumption to less than 1µA.
— The output of the 5VDC voltage regulator (RGO) is 0V.
— Access to the X3100/X3101 via the SPI port is NOT possible.
0
The internal over-discharge detection delay timer continues counting for T
CELL
17
< V
CE
, then OVP/LMON stays high and charging is prohibited.
1
While device is in sleep (in over-discharge protection) mode:
T
UV
1
- VCELL
The Longer of TOV+200ms OR TUV+200ms
2
4
) are above the Over-discharge threshold voltage (V
SS
X3100, X3101
SS
)
Over-discharge Protection Mode
), and hence battery cells are permitted to discharge.
Sleep Mode
Event Description
0.7V
CELL
CC
).
), falls below V
Note 1, 2
3
Cell Charge Prohibited if SWCEN=0
AND V
CELL
UV
4
.
is still below V
CELL
T
UVR
< V
CE
5
UV
seconds.
Note 3
UV.
UV
).
V
V
January 3, 2008
SLR
V
0V
V
UVR
V
V
5V
V
SS
CE
CC
CC
SS
FN8110.1