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KX-TG2853BXS/KX-TG2854BXS/KX-TGA280BXS
4.4.5. Sending Signal
4.4.6. Battery Low/Power Down Detector
Circuit Operation:
“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;
• Battery Low
Battery voltage: V (Batt) < 2.3V ± 50mV
The BBIC detects this level and “ ” starts flashing.
• Power Down
Battery voltage: V (Batt) < 2.1V ± 50mV
The BBIC detects this level and power down.
4.5. Circuit Operation (Charger Unit)
4.5.1. Power Supply Circuit
The power supply is as shown.
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