LP3919 Datasheet, PDF (1/7 Pages) National Semiconductor (TI) – CDMA Power Management Unit

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LP3919
CDMA Power Management Unit
Check for Samples: LP3919
SNVS493D – MAY 2007 – REVISED JUNE 2007
DESCRIPTION
The LP3919 is a complete Power Management Unit (PMU) designed for CDMA cellular phones. The LP3919
PMU contains a Li-Ion battery charger, low-noise low-dropout voltage regulators, buck regulators, a USB
Transceiver, comparators and a high-speed serial interface to program on/off conditions and output voltages of
individual regulators, and to read status information of the PMU.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
System Diagram
AC Adapter
I/O
Interface of
Baseband
Processor
Li-Ion Charger
ADC
MPL
Control
2 x DC/DC
9 x LDO
USB Transceiver
BB Processor
Power Domains
Memory
RF
2 x Comparator
Peripheral Devices
LP3919
Connector
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated