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S-8254AAAFT-TB-U Datasheet(PDF) 10 Page - Seiko Instruments Inc |
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S-8254AAAFT-TB-U Datasheet(HTML) 10 Page - Seiko Instruments Inc |
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10 / 29 page  BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK S-8254A Series Rev.5.2_00 10 2. 6 CTL Input Voltage “H” (VCTLH), CTL Input Voltage “L” (VCTLL) The CTL input voltage “H” (VCTLH) is the voltage of CTL when the voltages at the COP and DOP pins are “H” after the CTL voltage has been gradually increased starting at the initial status. The CTL input voltage “L” (VCTLL) is the voltage of CTL when the voltages at the COP and DOP pins are “L” after the CTL voltage has been gradually decreased. 2. 7 SEL Input Voltage “H” (VSELH), SEL Input Voltage “L” (VSELL) Apply 0 V to V4 in the initial status and confirm that the DOP pin is “H”. The SEL input voltage “L” (VSELL) is the voltage of the SEL pin when the voltage at the DOP pin is “L” after the SEL voltage has been gradually decreased. The SEL input voltage “H” (VSELH) is the voltage of the SEL pin when the voltage of the DOP pin is “H” after the SEL voltage has been gradually increased. 3. Overcharge Detection Delay Time, Overdischarge Detection Delay Time, Overcurrent Detection Delay Time 1, Overcurrent Detection Delay Time 2, Overcurrent Detection Delay Time 3 (Test circuit 3) Confirm that the COP pin and DOP pin are “L” when VVMP = VDD, VINI = VSS, and V1 = V2 = V3 = V4 = 3.5 V (this status is referred to as the initial status). 3. 1 Overcharge Detection Delay Time (tCU) The overcharge detection delay time (tCU) is the time it takes for the voltage of the COP pin to change from “L” to “H” after the voltage of V1 is instantaneously changed to 4.5 V from the initial status. 3. 2 Overdischarge Detection Delay Time (tDL) The overdischarge detection delay time (tDL) is the time it takes for the voltage of the DOP pin to change from “L” to “H” after the voltage of V1 is instantaneously changed to 1.5 V from the initial status 3. 3 Overcurrent Detection Delay Time 1 (tIOV1) Overcurrent detection delay time 1 (tIOV1) is the time it takes for the voltage of the DOP pin to change from “L” to “H” after the voltage of the VINI pin is instantaneously changed to 0.4 V from the initial status. 3. 4 Overcurrent Detection Delay Time 2 (tIOV2) Overcurrent detection delay time 2 (tIOV2) is the time it takes for the voltage of the DOP pin to change from “L” to “H” after the voltage of the VINI pin is instantaneously changed to VIOV2 max. + 0.2 V from the initial status. 3. 5 Overcurrent Detection Delay Time 3 (tIOV3) Overcurrent detection delay time 3 (tIOV3) is the time it takes for the voltage of the DOP pin to change from “L” to “H” after the voltage of the VMP pin is instantaneously changed to VIOV3 min. − 0.2 V from the initial status. |
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