S-8241 Seiko Instruments, S-8241 Datasheet - Page 12

• Manufacturer Part Number: S-8241
• Description: Battery Protection IC for 1-Cell Pack
• Manufacturer: Seiko Instruments

12
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8241 Series
(9) Measurement Condition 9, Measurement Circuit 1
〈〈 Overcurrent 1 detection delay time, Overcurrent 2 detection delay time, Load short-circuiting detection delay
time, Abnormal charge current detection delay time 〉〉
(10) Measurement Condition 10, Measurement Circuit 1 (Product with 0V battery charging function)
〈〈 0V battery charge start charger voltage 〉〉
(11) Measurement Condition 11, Measurement Circuit 1 (Product with 0V battery charge inhibiting function)
〈〈 0V battery charge inhibiting battery voltage 〉〉
Set V1=3.5V and V2=0V under normal condition. Increase V2 from 0 V to 0.35 V momentarily (within
10 µs). The time after V2 becomes overcurrent 1 detection voltage (V
1 detection delay time (t
Set V1=3.5 V and V2=0 V under normal condition. Increase V2 from 0 V to 0.7 V momentarily (within
1 µs). The time after V2 becomes overcurrent 1 detection voltage (V
detection delay time (t
Note: The overcurrent 2 detection delay time starts when the overcurrent 1 is detected, since the delay circuit is
Set V1=3.5 V and V2=0 V under normal condition. Increase V2 from 0 V to 3.0 V momentarily (within
1 µs). The time after V2 becomes the load short-circuiting detection voltage (V
the load short-circuiting detection delay time (t
Set V1=3.5 V and V2=0 V under normal condition. Decrease V2 from 0 V to -2.5 V momentarily (within
10 µs). The time after V2 becomes the charger detection voltage (V
charge current detection delay time. The abnormal charge current detection delay time has the same value
as the overcharge detection delay time.
Set V1=V2=0 V and decrease V2 gradually. The voltage between VDD and VM at which V
+ 0.1 V or higher) is the 0 V battery charge start charger voltage (V
Set V1=0 V and V2=-4 V. Increase V1 gradually. The voltage between VDD and VSS at which V
″H″ (V
common.
VM
+ 0.1 V or higher) is the 0V battery charge inhibiting battery voltage (V
IOV2
IOV1
).
).
I
V1
DD
A
COM
I
DO
V4
Seiko Instruments Inc.
VSS
Measurement circuit 1
VDD
A
DO
S-8241 series
V
SHORT
Figure 4
V
DO
).
V
CO
V
CO
A
VM
I
V3
CO
0CHA
IOV1
CHA
IOV1
A
) until V
).
) until V
I
V2
) until V
VM
CO
DO
SHORT
0INH
DO
goes "L" is the abnormal
goes "L" is overcurrent 2
).
goes "L" is overcurrent
) until V
CO
DO
goes ″H″ (V
Rev.4.1
goes "L" is
CO
goes
_01
VM