S-8211EAC-M5T1U Datasheet, PDF (10/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
Rev.2.4_02
 Test Circuits
Caution Unless otherwise specified, the output voltage levels “H” and “L” at CO pin (VCO) are judged by VVM +
1.0 V, and the output voltage levels “H” and “L” at DO pin (VDO) are judged by VSS + 1.0 V. 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 Condition 1, Test Circuit 1)
1. 1 CO pin output logic = Active “H”
Overcharge detection voltage (VCU) is defined as the voltage between the VDD pin and VSS pin at which VCO
goes from “L” to “H” when the voltage V1 is gradually increased from the starting condition of V1 = 3.5 V.
Overcharge release voltage (VCL) is defined as the voltage between the VDD pin and VSS pin at which VCO goes
from “H” to “L” when the voltage V1 is then gradually decreased. Overcharge hysteresis voltage (VHC) is defined
as the difference between overcharge detection voltage (VCU) and overcharge release voltage (VCL).
1. 2 CO pin output logic = Active “L”
Overcharge detection voltage (VCU) is defined as the voltage between the VDD pin and VSS pin at which VCO
goes from “H” to “L” when the voltage V1 is gradually increased from the starting condition of V1 = 3.5 V.
Overcharge release voltage (VCL) is defined as the voltage between the VDD pin and VSS pin at which VCO goes
from “L” to “H” when the voltage V1 is then gradually decreased. Overcharge hysteresis voltage (VHC) is defined
as the difference between overcharge detection voltage (VCU) and overcharge release voltage (VCL).
2. Overdischarge Detection Voltage, Overdischarge Release Voltage
(Test Condition 2, Test Circuit 2)
Overdischarge detection voltage (VDL) is defined as the voltage between the VDD pin and VSS pin at which VDO goes
from “H” to “L” when the voltage V1 is gradually decreased from the starting condition of V1 = 3.5 V, V2 = 0 V.
Overdischarge release voltage (VDU) is defined as the voltage between the VDD pin and VSS pin at which VDO goes
from “L” to “H” when the voltage V1 is then gradually increased. Overdischarge hysteresis voltage (VHD) is defined as
the difference between overdischarge release voltage (VDU) and overdischarge detection voltage (VDL).
3. Current Consumption during Operation
(Test Condition 3, 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 = 3.5 V and V2 = 0 V (normal status).
4. Current Consumption during Overdischarge
(Test Condition 3, Test Circuit 2)
The current consumption during overdischarge (IOPED) is the current that flows through the VDD pin (IDD) under the
set conditions of V1 = 1.5 V, V2 = 0V (overdischarge status).
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