S-8254AAKFT-TB-G Seiko Instruments, S-8254AAKFT-TB-G Datasheet - Page 20

• Manufacturer Part Number: S-8254AAKFT-TB-G
• Description: IC LI-ION BATT PROTECT 16-TSSOP
• Manufacturer: Seiko Instruments

Specifications of S-8254AAKFT-TB-G

• Function: Over/Under Voltage Protection
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2 V ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Product: Charge Management
• Output Voltage: 4.35 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

20
BATTERY PROTECTION IC FOR 3-SERIAL- OR 4-SERIAL-CELL PACK
S-8254A Series
• The application conditions for the input voltage, output voltage, and load current should not exceed the
• Batteries can be connected in any order, however, there may be cases when discharging cannot be
• When an overcharged battery and an overdischarged battery intermix, the circuit is in both the overcharge
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by
Caution
Precautions
package power dissipation.
performed when a battery is connected. In this case, short the VMP pin and VDD pin or connect the
battery charger to return to the normal mode.
and overdischarge statuses, so charging and discharging are not possible.
electrostatic protection circuit.
products including this IC of patents owned by a third party.
1. The above constants may be changed without notice.
2. It is recommended that filter constants between VDD and VSS should be set
3. It has not been confirmed whether the operation is normal or not in circuits other than
*1. Please set up a filter constant to be R
approximately to 112 μF • Ω.
Enough evaluation of transient power supply variation and overcurrent protection
function in the actual application is needed to determine the proper constants. Contact
our sales office in case the constants should be set to other than 112 μF • Ω or so.
the above example of connection. In addition, the example of connection shown above
and the constant do not guarantee proper operation. Perform thorough evaluation
using the actual application to set the constant.
C
VC1
e.g. C
No.
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
= R
VC2
VSS
× C
× R
Table 7 Constants for External Components
VC2
VSS
R
R
R
R
R
C
C
C
R
R
R
R
R
R
R
C
C
C
C
Part
= R
SENSE
DOP
COP
VMP
= 2.2 μF × 51 Ω = 112 μF • Ω
VSS
CCT
CDT
VSS
VC1
VC2
VC3
VC4
CTL
VINI
SEL
VC1
VC2
VC3
VC4
VC3
× C
Seiko Instruments Inc.
VC3
= R
Typical
5.1
5.1
0.1
0.1
0.1
0.1
0.1
0.1
2.2
51
⎯
1
1
1
1
1
1
1
1
VC4
VSS
× C
× C
VC4
VSS
0.01 or higher
0.07 or higher
= R
0 or higher
0 to 0.33
0 to 0.33
0 to 0.33
0 to 0.33
2.2 to 10
10 to 51
1 to 100
1 to 100
1 to 100
0.1 to 1
≥ 51 μF • Ω and to be R
0 to 1
0 to 1
0 to 1
0 to 1
2 to 10
1 to 10
Range
VSS
× C
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
VSS
.
Unit
MΩ
mΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
μF
μF
μF
μF
μF
μF
μF
Ω
VC1
×
Rev.5.0
_01