s-8204a Seiko Instruments Inc., s-8204a Datasheet - Page 22

• Manufacturer Part Number: s-8204a
• Description: Battery Protection Ic For 3-series Or 4-series Cell Pack
• Manufacturer: Seiko Instruments Inc.

22
BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK
S-8204A Series
Caution 1. The above constants may be changed without notice.
*1. Set up a filter constant to be R
• 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
• If both an overcharge battery and an overdischarge battery are included among the whole batteries, the
• 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
Precautions
package power dissipation.
performed when a battery is connected. In such a case, short the VMP pin and VDD pin or connect the
battery charger to return the IC to the normal mode.
condition is set in overcharge status and overdischarge status. Therefore either charging or discharging is
impossible.
electrostatic protection circuit.
products including this IC of patents owned by a third party.
= R
No.
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
8
9
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 in circuits other than the above
VC4
approximately to 47 µF • Ω.
Sufficient evaluation of transient power supply fluctuation and overcurrent protection
function with the actual application is needed to determine the proper constants. Contact
our sales office in case the constants should be set to other than 47 µF • Ω.
example of connection. In addition, the example of connection shown above and the
constants do not guarantee proper operation. Perform thorough evaluation using an
actual application to set the constant.
× C
e.g., C
VC4
= R
VSS
VSS
Symbol
R
× R
R
R
R
R
R
R
C
C
C
R
R
R
R
R
R
C
C
C
C
C
× C
SENSE
CTLC
CTLD
DOP
COP
VMP
CCT
CDT
VC1
VC2
VC3
VC4
VINI
VSS
VC1
VC2
VC3
VC4
VSS
SEL
CIT
VSS
VSS
Table 8 Constants for External Components
= 1.0 µF × 47 Ω = 47 µF • Ω
.
VSS
× C
Seiko Instruments Inc.
VSS
= 47 µF • Ω and to be R
Typical
0.1
5.1
5.1
0.1
0.1
47
47
47
47
47

1
1
1
1
1
1
1
1
1
1
0.01 or higher
0.01 or higher
0.01 or higher
0 or higher
22 to 100
0.51 to 1
0.51 to 1
0.51 to 1
0.51 to 1
0 to 100
0 to 100
0 to 100
0 to 100
1 to 100
VC1
0.1 to 1
0 to 2.2
2 to 10
1 to 10
1 to 10
1 to 10
1 to 10
Range
× C
VC1
*1
*1
*1
*1
*1
*1
*1
*1
*1
= R
VC2
× C
VC2
= R
Rev.1.3
Unit
MΩ
mΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
nF
nF
nF
nF
µF
µF
µF
µF
Ω
VC3
× C
_00
VC3