S-8249AAP-M6T1U Datasheet, PDF (10/22 Pages) Seiko Instruments Inc – VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION

VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION
S-8249 Series
 Standard Circuit
Rev.1.2_00
RVDD
RCB
CVDD
VDD
CB
VSS
CO
S-8249
DP
Series
_____
CE
Figure 4
Table 9 Constants for External Components
Symbol
Part
Purpose
Min.
Typ. Max.
Remark
RVDD
Resistor
ESD
protection,
for power
fluctuation
control
150 Ω
330 Ω
1.0 kΩ
Resistance should be as small as possible to
avoid worsening the overcharge detection
accuracy due to current consumption.^*1
CVDD
Capacitor
For power
fluctuation
control
0.068 μF
0.1 μF
1.0 μF
Connect a capacitor of 0.068 μF or more
between VDD pin and VSS pin.^*1
For setting
RCB
Resistor
the cell
balancing
−
current value
Set the required cell balancing current value
−
− depending on "2. Cell balancing status" in
" Operation".^*2
*1. When connecting a resistor less than 150 Ω to RVDD or a capacitor less than 0.068 μF to CVDD, the S-8249 Series
may malfunction when power is largely fluctuated.
*2. Set the cell balancing current value so that RCB does not exceed the power dissipation.
Cautions 1. The above constants may be changed without notice.
2. 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.
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