Power Management Unit 49-Pin uSMDXT T/R

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.