S-8262AAA-I8T1U Datasheet, PDF(11/36 Page) Seiko Instruments Inc

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S-8262AAA-I8T1U Datasheet, PDF (11/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

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Rev.1.0_02

BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK

S-8262A Series

ï® Test Circuits

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 set conditions of V1 = V2 = VCU â 0.05 V, V3 = 0 V. After that,

overcharge release voltage (VCL1) is defined as the voltage V1 at which VCO goes from "L" to "H" when the voltage

V1 is 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 set conditions of V1 = V2 = VCU â 0.05 V, V3 = 0 V. After that,

overcharge release voltage (VCL2) is defined as the voltage V2 at which VCO goes from "L" to "H" when the voltage

V2 is 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 set conditions of V1 = V2 = 3.5 V, V3 = 0 V. After that, overdischarge

release voltage (VDU1) is defined as the voltage V1 at which VDO goes from "L" to "H" when the voltage V1 is

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 set conditions of V1 = V2 = 3.5 V, V3 = 0 V. After that, overdischarge

release voltage (VDU2) is defined as the voltage V2 at which VDO goes from "L" to "H" when the voltage V2 is

gradually increased. Overdischarge hysteresis voltage (VHD2) is defined as the difference between VDU2 and VDL2.

3. Discharge overcurrent 1 detection voltage

(Test circuit 2)

Discharge overcurrent 1 detection voltage (VDIOV1) is defined as the voltage V3 whose delay time for changing VDO

from "H" to "L" is discharge overcurrent 1 detection delay time (tDIOV1) when the voltage V3 is increased from the

set conditions of V1 = V2 = 3.5 V, V3 = 0 V.

4 Discharge overcurrent 2 detection voltage

(Test circuit 2)

Discharge overcurrent 2 detection voltage (VDIOV2) is defined as the voltage V3 whose delay time for changing VDO

from "H" to "L" is discharge overcurrent 2 detection delay time (tDIOV2) when the voltage V3 is increased from the

set conditions of V1 = V2 = 3.5 V, V3 = 0 V.

5. 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 delay time (tSHORT) when the voltage V3 is increased from the set conditions

of V1 = V2 = 3.5 V, V3 = 0 V.

6. Charge overcurrent detection voltage

(Test circuit 2)

Charge overcurrent detection voltage (VCIOV) is defined as the voltage V3 whose delay time for changing VCO from

"H" to "L" is charge overcurrent delay time (tCIOV) when the voltage V3 is decreased from the set conditions of V1 =

V2 = 3.5 V, V3 = 0 V.

7. Current consumption during operation

(Test circuit 2)

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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