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S-8252AAD-M6T1U Datasheet(PDF) 11 Page - Seiko Instruments Inc |
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S-8252AAD-M6T1U Datasheet(HTML) 11 Page - Seiko Instruments Inc |
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11 / 36 page  BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK Rev.3.2_00 S-8252 Series 11 Test Circuits Caution Unless otherwise specified, the output voltage levels "H" and "L" at CO pin (VCO) and DO pin (VDO) are judged by the threshold voltage (1.0 V) of the N-channel FET. Judge the CO pin level with respect to VVM and the DO pin level with respect to VSS. 1. Overcharge detection voltage, overcharge release voltage (Test circuit 1) Overcharge detection voltage (VCU1) is defined as the voltage V1 at which VCO goes from "H" to "L" when the voltage V1 is gradually increased from the starting condition of V1 = V2 = VCU − 0.05 V, V3 = 0 V. Overcharge release voltage (VCL1) is defined as the voltage V1 at which VCO goes from "L" to "H" when the voltage V1 is then gradually decreased after setting V2 = 3.5 V. Overcharge hysteresis voltage (VHC1) is defined as the difference between VCU1 and VCL1. Overcharge detection voltage (VCU2) is defined as the voltage V2 at which VCO goes from "H" to "L" when the voltage V2 is gradually increased from the starting condition of V1 = V2 = VCU − 0.05 V, V3 = 0 V. Overcharge release voltage (VCL2) is defined as the voltage V2 at which VCO goes from "L" to "H" when the voltage V2 is then gradually decreased after setting V1 = 3.5 V. Overcharge hysteresis voltage (VHC2) is defined as the difference between VCU2 and VCL2. 2. Overdischarge detection voltage, overdischarge release voltage (Test circuit 2) Overdischarge detection voltage (VDL1) is defined as the voltage V1 at which VDO goes from "H" to "L" when the voltage V1 is gradually decreased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. Overdischarge release voltage (VDU1) is defined as the voltage V1 at which VDO goes from "L" to "H" when the voltage V1 is then gradually increased. Overdischarge hysteresis voltage (VHD1) is defined as the difference between VDU1 and VDL1. Overdischarge detection voltage (VDL2) is defined as the voltage V2 at which VDO goes from "H" to "L" when the voltage V2 is gradually decreased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. Overdischarge release voltage (VDU2) is defined as the voltage V2 at which VDO goes from "L" to "H" when the voltage V2 is then gradually increased. Overdischarge hysteresis voltage (VHD2) is defined as the difference between VDU2 and VDL2. 3. Discharge overcurrent detection voltage (Test circuit 2) Discharge overcurrent detection voltage (VDIOV) is defined as the voltage V3 whose delay time for changing VDO from "H" to "L" is discharge overcurrent detection delay time (tDIOV) when the voltage V3 is increased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. 4. Load short-circuiting detection voltage (Test circuit 2) Load short-circuiting detection voltage (VSHORT) is defined as the voltage V3 whose delay time for changing VDO from "H" to "L" is load short-circuiting detection delay time (tSHORT) when the voltage V3 is increased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. 5. Charge overcurrent detection voltage, charger detection voltage (Test circuit 2) 5. 1 With charge overcurrent detection function Charge overcurrent detection voltage (VCIOV) is defined as the voltage V3 whose delay time for changing VCO from "H" to "L" is charge overcurrent detection delay time (tCIOV) when the voltage V3 is decreased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. 5. 2 Without charge overcurrent detection function Charger detection voltage (VCHA) is defined as the voltage V3 at which VCO goes from "H" to "L" when the voltage V3 is decreased from the starting condition of V1 = V2 = 3.5 V, V3 = 0 V. 6. Current consumption during operation (Test circuit 2) The current consumption during operation (IOPE) is the current that flows through the VDD pin (IDD) under the set conditions of V1 = V2 = 3.5 V, V3 = 0 V. |
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