S-8254AALFT-TB-G Seiko Instruments, S-8254AALFT-TB-G Datasheet - Page 14

• Manufacturer Part Number: S-8254AALFT-TB-G
• Description: IC LI-ION BATT PROTECT 16-TSSOP
• Manufacturer: Seiko Instruments

Specifications of S-8254AALFT-TB-G

• Function: Over/Under Voltage Protection
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2 V ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Output Voltage: 4.3 V
• Operating Supply Voltage: 2 V to 24 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

14
BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
S-8254A Series
Remark Refer to “
1. Normal Status
2. Overcharge Status
3. Overdischarge Status
4. Power-down Status
Operation
When all of the battery voltages are in the range from V
the specified value (the VINI pin voltage is lower than V
than V
When any one of the battery voltages becomes higher than V
the COP pin becomes high impedance. The COP pin is pulled up to the EB
resistor, and the charging FET is turned off to stop charging. This is called the overcharge status. The
overcharge status is released when one of the following two conditions holds.
When any one of the battery voltages becomes lower than V
the DOP pin voltage becomes V
is called the overdischarging status. After discharging is stopped due to the overdischarge status, the S-
8254A Series enters the power-down status.
When discharging has stopped due to the overdischarge status, the VMP pin is pulled down to the V
level by the R
the power-down status. In the power-down status, almost all the circuits of the S-8254A Series stop and
the current consumption is I
The power-down status is released when the following condition holds.
The following two conditions release the overdischarging status.
(1) All battery voltages become V
(2) All of the battery voltages are V
(1) COP pin : High-Z
(2) DOP pin : V
(1) The VMP pin voltage is V
(1) In case the VMP pin voltage is V
(2) In case a charger is connected, the overdischarge hysteresis is released. And the overdischarging
IOV3
load is connected and discharging is started via the body diode of the charging FET).
overdischarging status is released when all battery voltages are V
status is released when all battery voltages are V
), the charging and discharging FETs are turned on.
VMS
resistor. When the VMP pin voltage is lower than V
DD
Battery Protection IC Connection Example”.
PDN
or lower. The conditions of each output pin are as follows.
DD
DD
/ 2 or higher.
level, and the discharging FET is turned off to stop discharging. This
CLn
Seiko Instruments Inc.
CUn
or lower.
DD
or lower, and the VMP pin voltage is 39 / 40 × V
/ 2 or higher and the VMP pin voltage is lower than V
DLn
IOV1
DLn
to V
or higher.
and V
DLn
CUn
CUn
and the state continues for t
and the state continues for t
IOV2
and the discharge current is lower than
, and the VMP pin voltage is higher
DD
DUn
/ 2, the S-8254A Series enters
or higher.
+
pin voltage by an external
Rev.5.0
DD
CU
DL
or lower (a
or longer,
or longer,
DD
_01
, the
SS