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S-8253A Datasheet(PDF) 10 Page - Seiko Instruments Inc |
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S-8253A Datasheet(HTML) 10 Page - Seiko Instruments Inc |
10 / 32 page BATTERY PROTECTION IC FOR 2-SERIAL OR 3-SERIAL-CELL PACK S-8253A/B Series Rev.3.7_00 Seiko Instruments Inc. 10 Test Circuits 1. Overcharge Detection Voltage 1, Overcharge Release Voltage 1, Overdischarge Detection Voltage 1, Overdischarge Release Voltage 1 (Test Condition 1, 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 and DOP pins are “L” (VDD × 0.1 V or lower) (this status is referred to as the initial status). 1. 1 Overcharge Detection Voltage 1 (VCU1), Overcharge Release Voltage 1 (VCL1) Overcharge detection voltage 1 (VCU1) is the voltage of V1 when the voltage of the COP pin is “H” (VDD × 0.9 V or more) after the V1 voltage has been gradually increased starting at the initial status. Overcharge release voltage 1 (VCL1) is the voltage of V1 when the voltage at the COP pin is low after the V1 voltage has been gradually decreased. 1. 2 Overdischarge Detection Voltage 1 (VDL1), Overdischarge Release Voltage 1 (VDU1) Overdischarge detection voltage 1 (VDL1) is the voltage of V1 when the voltage of the DOP pin is high after the V1 voltage has been gradually decreased starting at the initial status. Overdischarge release voltage 1 (VDU1) is the voltage of V1 when the voltage at the DOP pin is low after the V1 voltage has been gradually increased. By changing Vn (n = 2: S-8253A Series, n = 2, 3: S-8253B Series) the overcharge detection voltage (VCUn), overcharge release voltage (VCLn), overdischarge detection voltage (VDLn), and overdischarge release voltage (VDun) can be measured in the same way as when n = 1. 2. Overcurrent Detection Voltage 1, Overcurrent Detection Voltage 2, Overcurrent Detection Voltage 3 (Test Condition 2, 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). 2. 1 Overcurrent Detection Voltage 1 (VIOV1) Overcurrent detection voltage 1 (VIOV1) is the voltage of V5 when the voltages of the COP pin and DOP pin are high after the V5 voltage has been gradually increased starting at the initial status. 2. 2 Overcurrent Detection Voltage 2 (VIOV2) Overcurrent detection voltage 2 (VIOV2) is the voltage of V5 when the voltages of the COP pin and DOP pin are high within the minimum and maximum values of overcurrent detection time 2 (tIOV2) after the voltage of V5 was instantaneously increased (within 10 µs) starting at the initial status. 2. 3 Overcurrent Detection Voltage 3 (VIOV3) Overcurrent detection voltage 3 (VIOV3) is the voltage of V5 when the voltages of the COP pin and DOP pin are high within the minimum and maximum values of overcurrent detection time 3 (tIOV3) after the voltage of V5 was instantaneously increased (within 10 µs) starting at the initial status. |
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