s-8243b Seiko Instruments Inc., s-8243b Datasheet - Page 13

• Manufacturer Part Number: s-8243b
• Description: Battry Protection Ic For 3-serial Or 4-serial Cell Pack
• Manufacturer: Seiko Instruments Inc.

Rev.2.5
5. CTL1 pin current, overcharge detection delay, overdischarge detection delay, and overcurrent
6. Input voltages for CTL1 and CTL2 (Test circuit 6)
7. 0 V battery charge starting charger voltage and 0 V battery charge inhibition battery voltage (Test
Starting condition is V1 = V2 = V3 = V4 = 3.5 V and V
Current that flows between the CTL1 pin and V
The overcharge detection delay time t
after the V1 voltage is rapidly increased from 3.5 V to 4.5 V.
The overdischarge detection delay time t
after the V1 voltage is rapidly decreased from 3.5 V to 1.5 V.
The overcurrent detection delay time 1 is a time needed for the DOP pin voltage to change from “Low” to “High” just after
the VMP pin voltage is decreased from V
Starting condition is V1 = V2 = V3 = V4 = 3.5 V.
Pin voltages of the COP and the DOP should be “High” when V
Pin voltages of the COP and the DOP should be “Low” when V
Pin voltage of the COP is “High” and the pin voltage of the DOP is “Low” when V
min.
Pin voltage of the COP is “Low” and the pin voltage of the DOP is “High” when V
max.
One of the 0 V battery charge starting charger voltage and 0 V battery charge inhibition battery voltage is
applied to each product according to the 0V battery charging function.
Starting condition is V1 = V2 = V3 = V4 = 0 V for a product in which 0 V battery charging is available.
The COP pin voltage should be lower than V
Starting condition is V1 = V2 = V3 = V4 = V
The COP pin voltage should be higher than V
detection delay 1 (Test circuit 5)
circuit 7)
_00
BATTERY PROTECTION IC FOR 3-SERIAL OR 4-SERIAL CELL PACK
CU
DL
is a time needed for the COP pin voltage to change from “Low” to “High” just
DD
is a time needed for the DOP pin voltage to change from “Low” to “High” just
Seiko Instruments Inc.
0INH
to V
0CHA
MP
SS
for a product in which 0 V battery charging is inhibited.
−1 V when the VMP pin voltage V
DD
max.−1 V when the VMP pin voltage V
is the CTL1 pin current I
−0.35 V when V1 = 3.5 V.
MP
= V
DD
.
CTL1
CTL1
= V
= V
CTL1L
CTL1H
CTL1L
max. and CTL2 is OPEN.
min. and CTL2 is OPEN.
.
CTL1
CTL1
MP
= 24 V.
= V
= V
MP
CTL1L
CTL1L
= V
S-8243A/B Series
max. and V
max. and V
0CHA
max.
CTL2
CTL2
= V
= V
CTL2H
CTL2L
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