S-8233ACFE-TB Seiko Instruments, S-8233ACFE-TB Datasheet - Page 19

• Manufacturer Part Number: S-8233ACFE-TB
• Description: Battery Management 4.25V 3-Cell Serial
• Manufacturer: Seiko Instruments

Specifications of S-8233ACFE-TB

• Product: Charge Management
• Battery Type: Li-Ion Pack
• Output Voltage: 24 V
• Operating Supply Voltage: 2 V to 24 V
• Supply Current: 50 uA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 20 C
• Package / Case: SOP-14
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Rev.4.1
Battery Protection IC Connection Example
[Description of Figure 9]
Battery 2
Battery 3
Battery 1
The over charge detection delay time (t
over current detection delay time (t
characteristics.
R6 is a pull-up resistor that turns FET-B off when the COP terminal is opened. Connect a 100 kΩ to
1 MΩ resistor.
R5 is used to protect the IC if the charger is connected in reverse. Connect a 10 kΩ to 50 kΩ resistor.
If capacitor C6 is absent, rush current occurs when a capacitive load is connected and the IC enters the
If capacitor C5 is not connected, the IC may enter the over discharge condition due to variations of battery
If a leak current flows between the delay capacitor connection terminal (CCT, CDT, or COVT) and VSS, the
Over discharge detection can be disabled by using FET-C. The FET-C off leak must be 0.1 μA or less. If
R1, R2, and R3 must be 1 kΩ or less.
R7 is the protection of the CTL when the CTL terminal voltage higher than V
5 kΩ resister. If the CTL terminal voltage never greater than the V
without R7 resister is allowed.
over current mode. C6 must be connected to prevent it.
voltage when the over current occurs. In this case, a charger must be connected to return to the normal
condition. To prevent this, connect an at least 0.01μF capacitor to C5.
delay time increases and an error occurs. The leak current must be 100 nA or less.
over discharge is inhibited by using this FET, the current consumption does not fall below 0.1 μA even
when the battery voltage drops and the IC enters the over discharge detection mode.
_00
R1
R2
R3
C2
C3
C1
Over discharge
Condition
Over charge
Condition
Over current
Condition
IOV1
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
FET-A
VSS
VCC
CD1
VC1
CD2
VC2
CD3
) are changed with external capacitors (C4 to C6). See the electrical
CU1
DOP
Seiko Instruments Inc.
to t
CU3
FET-B
Figure 9
S-8233C series
), over discharge detection delay time (t
Nch open
drain
COP
R6
1 MΩ
CC
COVT
CTL
CCT
voltage (ex. R7 connect to V
VMP
CDT
10 kΩ
R5
C4
C6
C5
CC
voltage. Connect a 300 Ω to
R7
1 kΩ
CTL terminal voltage
GND: Normal operation
Floating or V
charging and discharging
Over charge delay
time setting
Over discharge delay
time setting
EB+
Over current delay
time setting
EB-
S-8233C Series
High: Inhibit over
discharge detection
DD1
FET-C
CC
: Inhibit
to t
DD3
SS
), and
),
19