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S-8249AAR-M6T1U Datasheet(PDF) 10 Page - Seiko Instruments Inc |
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S-8249AAR-M6T1U Datasheet(HTML) 10 Page - Seiko Instruments Inc |
10 / 23 page VOLTAGE MONITORING IC WITH CELL BALANCING FUNCTION S-8249 Series Rev.1.4_00 10 Standard Circuit VDD CB VSS CO CE _____ S-8249 Series RVDD CVDD RCB DP 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 μF0.1 μF1.0 μF Connect a capacitor of 0.068 μF or more between VDD pin and VSS pin. *1 RCB Resistor For setting 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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