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3.2 Power Management
Power management unit, so called PMU, is integrated into analog part. To facilitate software control and
interface design, PMU control share the CCI interface along with other analog parts, such as BBTX, BBRX,
VBI and ABI during FT.
3.2.1 Low Dropout Regulators(LDOs), Buck converterand Reference
The PMU Integrates 12 LDOs that are optimized for their given functions by balancing quiescent current,
dropout voltage, line/load regulation, and output noise.
RF LDO (Vrf)
The RF LDO is a linear regulator that could source 180mA (max) with 2.8V output voltage. It
supplies the RF circuitry of the handset. The LDO is optimized for high performance and adequate
quiescent current.
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure. 3.2.1 PMU system block diagram
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3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
LGE Internal Use Only
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