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Power Supply Circuit - Panasonic KX-TG5621BXS Service Manual

5.8 ghz digital cordless phone
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KX-TG5621BXS / KX-TGA561BXS

12.3. Power Supply Circuit

Function:
The power supply voltage from AC adaptor is converted to the desired voltage of each block.
Circuit Operation:
• Q300 and IC300: 4.0V DCDC Converter
• IC331: 3.3V Regulator
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