S-8259AAA-M6T1U Datasheet, PDF (8/21 Pages) Seiko Instruments Inc – BATTERY MONITORING IC FOR 1-CELL PACK

BATTERY MONITORING IC FOR 1-CELL PACK
S-8259A Series
Rev.1.0_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 circuit 1)
Overcharge detection voltage (VCU) 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 = 3.4 V. Overcharge release voltage (VCL) is defined as the
voltage V1 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 VCU and VCL.
2. Overdischarge detection voltage, overdischarge release voltage
(Test circuit 2)
Overdischarge detection voltage (VDL) 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 = 3.4 V. Overdischarge release voltage (VDU) 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 (VHD) is defined as the difference between VDU and VDL.
3. Current consumption during operation
(Test circuit 3)
The current consumption during operation (IOPE) is the current that flows through VDD pin (IDD) under the set condition
of V1 = 3.4 V.
4. Current consumption during overdischarge
(Test circuit 3)
The current consumption during overdischarge (IOPED) is IDD under the set condition of V1 = 1.5 V.
5. CO pin resistance "H" 1
(Test circuit 4)
The CO pin resistance "H" 1 (RCOH1) is the resistance between VDD pin and CO pin under the set conditions of V1 = 3.4 V,
V3 = 3.0 V.
6. CO pin resistance "L"
(Test circuit 4)
The CO pin resistance "L" (RCOL) is the resistance between VM pin and CO pin under the set conditions of V1 = 4.7 V,
V3 = 0.4 V.
7. DO pin resistance "H"
(Test circuit 4)
The DO pin resistance "H" (RDOH) is the resistance between VDD pin and DO pin under the set conditions of V1 = 3.4 V,
V4 = 3.0 V.
8. DO pin resistance "L"
(Test circuit 4)
The DO pin resistance "L" (RDOL) is the resistance between VSS pin and DO pin under the set conditions of V1 = 1.8 V,
V4 = 0.4 V.
9. CO pin resistance "H" 2
(Test circuit 4)
The CO pin resistance "H" 2 (RCOH2) is the resistance between VDD pin and CO pin under the set conditions of V1 = 4.7 V,
V3 = 0 V.
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