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LGE Internal Use Only
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Only for training and service purposes
3. TECHNICAL BRIEF
Figure. 3.5.5 POWER SUPPLY BLOCK DIAGRAM
3.5.2.4 Power Supply
To increase power efficiency less senstivie parts of the RF subsystem are supplied by the DCDC converter
situated in the PMU subsystem. Conversion of the 1.8 V output voltage of the DCDC to the 1.3 V/1,4 V circuit
supply voltages is achieved by several Low-DropOut regulators (LDO).
One embedded direct-to-battery LDO provides the 2.5 V supply voltage for the remaining circuits.
This voltage is also used to generate a clean 1.4 V supply voltage via an additional LDO.