S-8211EAC-M5T1U Datasheet, PDF (15/29 Pages) Seiko Instruments Inc – BATTERY PROTECTION IC

Rev.2.4_02
BATTERY PROTECTION IC FOR 1-CELL PACK
S-8211E Series
 Battery Protection IC Connection Example
R1
VDD
Battery C1
S-8211E Series
VSS
DO
CO
VM
R2
CO
DO
Figure 10
Table 15 Constants for External Components
Symbol Part
Purpose
Min.
Typ.
Max.
Remark
R1
Resistor
ESD protection,
For power fluctuation
100 Ω
220 Ω
330 Ω
Resistance should be as small as possible to
avoid lowering the overcharge detection
accuracy due to current consumption. ^*1
C1
Capacitor For power fluctuation
0.022 μF 0.1 μF
1.0 μF
Connect a capacitor of 0.022 μF or higher
between VDD pin and VSS pin. ^*2
R2^*3 Resistor ESD protection
300 Ω
1 kΩ
4 kΩ
-
*1. Insert a resistor of 100 Ω or higher as R1 for ESD protection.
*2. If a capacitor of less than 0.022 μF is connected to C1, DO pin may oscillate. Be sure to connect a capacitor of 0.022 μF
or higher to C1.
*3. Be sure to using R2, connect the VM pin with the VSS pin.
Caution
1. The above constants may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than 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.
15