S-8261AAHMD-G2H-T2 Seiko Instruments, S-8261AAHMD-G2H-T2 Datasheet - Page 19

• Manufacturer Part Number: S-8261AAHMD-G2H-T2
• Description: Battery Management 4.28V Single Cell
• Manufacturer: Seiko Instruments

Specifications of S-8261AAHMD-G2H-T2

• Product: Li-Ion Protection
• Battery Type: Li-Ion, Li-Pol
• Output Voltage: 8 V
• Operating Supply Voltage: 1.5 V to 8 V
• Supply Current: 7 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: SOT-23-6
• Mounting Style: SMD/SMT
• Uvlo Start Threshold: 1 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Rev.4.4
4. Overdischarge Condition
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
condition and the detection continues for the overdischarge detection delay time (t
the discharging control FET off to stop discharging. This condition is called the overdischarge condition. 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 condition 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
condition and the detection continues for the overdischarge detection delay time (t
the discharging control FET off to stop discharging. This condition is called the overdischarge condition. 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 condition.
When a battery in the overdischarge condition 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 condition 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
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
).
CU
) elapses.
DL
DL
) or higher, the S-8261 Series turns the discharging FET on and returns to the normal condition.
) since the charger detection function works. This action is called charger detection.
CHA
). Consequently, if an abnormal charge current flows to an over-discharged battery,
CHA
).
CHA
BATTERY PROTECTION IC FOR SINGLE-CELL PACK
), the S-8261 Series releases the overdischarge condition and turns the
Seiko Instruments Inc.
CHA
), the S-8261 Series releases the overdischarge condition when the
CU
PDN
) or longer, the charging control FET turns off and charging stops.
). This condition is called the power-down condition.
DL
) + overdischarge hysteresis (V
CHA
) during charging under normal condition 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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