S-8253A Datasheet, PDF (11/32 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK

Rev.3.7_00
BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK
S-8253A/B Series
3. Overcharge Detection Delay Time, Overdischarge Detection Delay Time
(Test Condition 3, Test Circuit 1)
Confirm that V1 = V2 = 3.5 V (S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V4 = 0 V, V5 = 0 V, and the COP
pin and DOP pin are low (this status is referred to as the initial status).
3. 1 Overcharge Detection Delay Time (t_CU)
The overcharge detection delay time (t_CU) is the time it takes for the voltage of the COP pin to change from low to
high after the voltage of V1 is instantaneously changed from overcharge detection voltage 1 (V_CU1) − 0.2 V to
overcharge detection voltage 1 (V_CU1) + 0.2 V (within 10 µs) starting at the initial status.
3. 2 Overdischarge Detection Delay Time (t_DL)
The overdischarge detection delay time (t_DL) is the time it takes for the voltage of the DOP pin to change from low to
high after the voltage of V1 is instantaneously changed from overdischarge detection voltage 1 (V_DL1) + 0.2 V to
overdischarge detection voltage 1 (V_DL1) − 0.2 V (within 10 µs) starting at the initial status.
4. Overcurrent Detection Delay Time 1, Detection Delay Time 2, Detection Delay Time 3
(Test Condition 4, Test Circuit 1)
Confirm that V1 = V2 = 3.5 V (S-8253A Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), V4 = 0 V, V5 = 0 V, and the COP
pin and DOP pin are low (this status is referred to as the initial status).
4. 1 Overcurrent Detection Delay Time 1 (t_IOV1)
Overcurrent detection delay time 1 (t_IOV1) is the time it takes for the voltage of the DOP pin to change from low to high
after the voltage of V5 is instantaneously changed to 0.35 V (within 10 µs) starting at the initial status.
4. 2 Overcurrent Detection Delay Time 2 (t_IOV2)
Overcurrent detection delay time 2 (t_IOV2) is the time it takes for the voltage of the DOP pin to change from low to high
after the voltage of V5 is instantaneously changed to 0.7 V (within 10 µs) starting at the initial status.
4. 3 Overcurrent Detection Delay Time 3 (t_IOV3)
Overcurrent detection delay time 3 (t_IOV3) is the time it takes for the voltage of the DOP pin to change from low to high
after the voltage of V5 is instantaneously changed to 1.6 V (within 10 µs) starting at the initial status.
5. Consumption on Operation, Power Consumption at Power-down
(Test Condition 5, Test Circuit 2)
5. 1 Power Consumption on Operation (I_OPE)
The power consumption during operation (I_OPE) is the current of the VSS pin (I_SS) when V1 = V2 = 3.5 V (S-8253A
Series), V1 = V2 = V3 = 3.5 V (S-8253B Series), S1 = ON, and S2 = OFF.
5. 2 Power Consumption at Power-down (I_PDN)
The power consumption at power-down (I_PDN) is the current of the VSS pin (I_SS) when V1 = V2 = 1.5 V (S-8253A
Series), V1 = V2 = V3 = 1.5 V (S-8253B Series), S1 = OFF, and S2 = ON.
Seiko Instruments Inc.
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