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3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
3.5.2.4 Power Supply
To increase power efficiency most 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.
Figure. 3.5.5 POWER SUPPLY BLOCK DIAGRAM
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Figure. 3.5.5 POWER SUPPLY BLOCK DIAGRAM