Power Block - LG -V909DW Service Manual

3.9 Power Block

3.9 Power Block
3.9.1. General
3.9.1. General
Since LG-V909 has two individual chips, MDM6200 uses PM8028 and T20 uses TPS658621D as a main PMIC.
Since LG-V909 has two individual chips, MDM6200 uses PM8028 and T20 uses TPS658621D as a main PMIC.
3.9.2 PM8028
3.9.2 PM8028
The PM8028 device integrates all wireless handset power-management, general-housekeeping, and user-
The PM8028 device integrates all wireless handset power-management, general-housekeeping, and user-
interface support functions into a single mixed-signal IC. Its versatile design is suitable for CDMA, UMTS,
interface support functions into a single mixed-signal IC. Its versatile design is suitable for CDMA, UMTS,
and/or GSM phones, and other wireless products such as data cards and PDAs. This mixed-signal BiCMOS
and/or GSM phones, and other wireless products such as data cards and PDAs. This mixed-signal BiCMOS
device is available in the 136-pin nano-scale package (136 NSP) that includes several ground pins for
device is available in the 136-pin nano-scale package (136 NSP) that includes several ground pins for
electrical ground and thermal relief. The PM8028 is organized by the following device functionality:
electrical ground and thermal relief. The PM8028 is organized by the following device functionality:
- Input power management
- Input power management
- Output voltage regulation
- Output voltage regulation
- General housekeeping
- General housekeeping
- User interfaces
- User interfaces
- IC interfaces
- IC interfaces
- Configurable pins – either MPPs or GPIOs – that can be configured to function within some of
- Configurable pins – either MPPs or GPIOs – that can be configured to function within some of
LGE Internal Use Only
Figure. Modem Power Block Diagram
Figure. Modem Power Block Diagram
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3. TECHNICAL BRIEF
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Only for training and service purposes