S-8252AAA-M6T1U Datasheet, PDF (13/36 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

Rev.3.2_00
BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK
S-8252 Series
16. Overdischarge detection delay time
(Test circuit 5)
The overdischarge detection delay time (t_DL) is the time needed for V_DO to go to "L" after the voltage V1 decreases
and falls below V_DL under the set condition of V1 = V2 = 3.5 V, V3 = 0 V.
17. Discharge overcurrent detection delay time
(Test circuit 5)
The discharge overcurrent detection delay time (t_DIOV) is the time needed for V_DO to go to "L" after the voltage V3
increases and exceeds V_DIOV under the set conditions of V1 = V2 = 3.5 V, V3 = 0 V.
18. Load short-circuiting detection delay time
(Test circuit 5)
The load short-circuiting detection delay time (t_SHORT) is the time needed for V_DO to go to "L" after the voltage V3
increases and exceeds V_SHORT under the set conditions of V1 = V2 = 3.5 V, V3 = 0 V.
19. Charge overcurrent detection delay time
(Test circuit 5)
The charge overcurrent detection delay time (t_CIOV) is the time needed for V_CO to go to "L" after the voltage V3
decreases and falls below V_CIOV under the set condition of V1 = V2 = 3.5 V, V3 = 0 V.
20. 0 V battery charge starting charger voltage (0 V battery charge function "available")
(Test circuit 2)
The 0 V battery charge starting charger voltage (V_0CHA) is defined as the absolute value of voltage V3 at which V_CO
goes to "H" (V_CO = V_DD) when the voltage V3 is gradually decreased from the starting condition of V1 = V2 = V3 = 0
V.
21. 0 V battery charge inhibition battery voltage (0 V battery charge function "unavailable")
(Test circuit 2)
The 0 V battery charge inhibition battery voltage (V_0INH) is defined as the voltage V1 at which V_CO goes to "L" (V_VM +
0.1 V or lower) when the voltage V1 is gradually decreased, after setting V1 = V2 = 1.5 V, V3 = −6.0 V.
V_CO
V
V3
COM
VM
VDD
S-8252 Series
CO
VC
DO
V
V_DO
VSS
R1 = 470 Ω
C1 = 0.1 μF
V1
R2 = 470 Ω
V2
C2 = 0.1 μF
Figure 5 Test Circuit 1
13