S-8254AALFT-TB-G Seiko Instruments, S-8254AALFT-TB-G Datasheet - Page 9

• 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

Rev.5.0
This chapter describes how to test the S-8254A Series when a 4-serial cell is selected by setting the SEL pin
to the VDD level. When a 3-serial cell is selected by setting the SEL pin to the VSS level, short the power
supply V4.
1. Current Consumption on Operation, Current Consumption at Power-down
2. Overcharge Detection Voltage, Overcharge Release Voltage, Overdischarge Detection Voltage,
Test Circuits
Confirm that the COP pin and DOP pin are low (V
= V
as the initial status).
(Test circuit 1)
1.1 Current Consumption on Operation (I
1.2 Current Consumption at Power-down (I
Overdischarge Release Voltage, Overcurrent Detection Voltage 1, Overcurrent Detection Voltage
2, Overcurrent Detection Voltage 3, CTL Input Voltage “H”, CTL Input Voltage “L”, SEL Input
Voltage “H”, SEL Input Voltage “L”
(Test circuit 2)
2.1 Overcharge Detection Voltage (V
2.2 Overdischarge Detection Voltage (V
2.3 Overcurrent Detection Voltage 1 (V
2.4 Overcurrent Detection Voltage 2 (V
2.5 Overcurrent Detection Voltage 3 (V
SS
The current at the VSS pin when V1 = V2 = V3 = V4 = 3.5 V and V
consumption (I
The current at the VSS pin when V1 = V2 = V3 = V4 = 1.5 V and V
(I
The overcharge detection voltage (V
(V
The overcharge release voltage (V
the V1 voltage has been gradually decreased.
The overdischarge detection voltage (V
after the V1 voltage has been gradually decreased starting at the initial status. The overdischarge
release voltage (V
has been gradually increased.
When the voltage of Vn (n = 2 to 4) is changed, the overcharge detection voltage (V
release voltage (V
(V
Overcurrent detection voltage 1 (V
is “H” after the VINI pin voltage has been gradually increased starting at the initial status.
Overcurrent detection voltage 2 (V
is “H” after the voltage of the CDT pin was set to V
VINI pin has been gradually decreased.
Overcurrent detection voltage 3 (V
when the voltage of the DOP pin is “H” after the VMP voltage has been gradually decreased starting at
the initial status.
_01
PDN
, the CCT pin is open, the CDT pin is open, and V1 = V2 = V3 = V4 = 3.5 V (this status is referred to
DD
DUn
) at power down.
× 0.9 V or more) after the V1 voltage has been gradually increased starting at the initial status.
) can be determined in the same way as when n = 1.
BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
OPE
) during operation.
DU1
CLn
) is the voltage of V1 when the voltage at the DOP pin is “L” after the V1 voltage
), overdischarge detection voltage (V
CL1
IOV1
IOV2
IOV3
Seiko Instruments Inc.
CU1
CU1
) is the voltage of V1 when the voltage at the COP pin is “L” after
) is the voltage of the VINI pin when the voltage of the DOP pin
) is the voltage of the VINI pin when the voltage of the DOP pin
) is the voltage difference between V
IOV1
IOV2
IOV3
), Overcharge Release Voltage (V
DL1
DL1
) is the voltage of V1 when the voltage of the COP pin is “H”
OPE
)
)
)
) is the voltage of V1 when the voltage of the DOP pin is “H”
), Overdischarge Release Voltage (V
PDN
)
DD
)
× 0.1 V or lower) when V
SS
following the initial status and the voltage of the
DLn
), and overdischarge release voltage
VMP
VMP
= V
= V
DD
SS
VMP
CL1
VC1
is the current consumption
is the current
= V
)
and V
SEL
DU1
S-8254A Series
)
= V
VMP
CUn
DD
), overcharge
(V
, V
VC1
INI
= V
− V
CTL
VMP
9
)