Nokia 8208, Руководство по обслуживанию

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RM-384
System Module and User Interface
Issue1 Company Confidential Page 5-15
Copyright © 2009 Nokia. All rights reserved.
Figure 56 Mobile terminal charger circuit
In active mode, charging is controlled by the PM’s digital part. Charging voltage and current monitoring are
used to limit charging into a safe area.
The OVP limits the charging voltage to MaxVoltage.
MaxVoltage= 6.85V
Normal and extreme voltages
Energy management is mainly carried out in the two Application Specific Integrated Circuits (ASICs) BETTY
and AVILMA. These two circuits contains a number of regulators. In addition there are some external
regulators too. In the table below, normal and extreme voltages are shown when a BL-4C battery is used.