S-8261ABLBD-G3LTFG Seiko Instruments, S-8261ABLBD-G3LTFG Datasheet - Page 19

• Manufacturer Part Number: S-8261ABLBD-G3LTFG
• Description: IC LI-ION BATT PROTECT SOT23-6
• Manufacturer: Seiko Instruments

Specifications of S-8261ABLBD-G3LTFG

• Function: Over/Under Voltage Protection
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.5.0
4. Overdischarge Status
5. Charger Detection
6. Abnormal Charge Current Detection
For products with power-down function
For products without power-down function
When the battery voltage falls below the overdischarge detection voltage (V
status and the detection continues for the overdischarge detection delay time (t
the discharging control FET off to stop discharging. This status is called the overdischarge status. When the
discharging control FET is turned off, the VM pin voltage is pulled up by the resistor between VM and VDD in the IC
(R
is reduced to the power-down current consumption (I
The power-down status is released when a charger is connected and the voltage difference between the VM and
VDD becomes 1.3 V (typ.) or higher. Moreover when the battery voltage becomes the overdischarge detection
voltage (V
When the battery voltage falls below the overdischarge detection voltage (V
status and the detection continues for the overdischarge detection delay time (t
the discharging control FET off to stop discharging. This status is called the overdischarge status. When the
discharging control FET is turned off, the VM pin voltage is pulled up by the resistor between VM and VDD in the IC
(R
When the battery voltage becomes the overdischarge detection voltage (V
discharging FET on and returns to the normal status.
When a battery in the overdischarge status is connected to a charger and provided that the VM pin voltage is lower
than the charger detection voltage (V
discharging control FET on when the battery voltage becomes equal to or higher than the overdischarge detection
voltage (V
When a battery in the overdischarge status is connected to a charger and provided that the VM pin voltage is not
lower than the charger detection voltage (V
battery voltage reaches the overdischarge detection voltage (V
If the VM pin voltage falls below the charger detection voltage (V
continues for the overcharge detection delay time (t
stops. This action is called the abnormal charge current detection.
Abnormal charge current detection works when the DO pin voltage is “H” and the VM pin voltage falls below the
charger detection voltage (V
the S-8261 Series turns the charging control FET off and stops charging after the battery voltage becomes higher
than the overdischarge detection voltage which make the DO pin voltage “H”, and still after the overcharge detection
delay time (t
Abnormal charge current detection is released when the voltage difference between VM pin and VSS pin becomes
less than charger detection voltage (V
VMD
VMD
_00
). When the voltage difference between the VM and VDD then is 1.3 V (typ.) or lower, the current consumption
).
DL
DL
) or higher, the S-8261 Series turns the discharging FET on and returns to the normal status.
) since the charger detection function works. This action is called charger detection.
CU
) elapses.
CHA
). Consequently, if an abnormal charge current flows to an over-discharged battery,
CHA
CHA
).
Seiko Instruments Inc.
), the S-8261 Series releases the overdischarge status and turns the
CHA
LOW DROPOUT CMOS VOLTAGE REGULATOR
), the S-8261 Series releases the overdischarge status when the
PDN
CU
) or longer, the charging control FET turns off and charging
). This status is called the power-down status.
DL
) + overdischarge hysteresis (V
CHA
) during charging under normal status and it
DL
DL
DL
) or higher, the S-8261 Series turns the
) during discharging under the normal
) during discharging under the normal
DL
DL
) or longer, the S-8261 Series turns
) or longer, the S-8261 Series turns
HD
S-8261 Series
) or higher.
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