The LP3918 is a fully integrated charger and multi-regulator unit designed for CDMA
cellular phones. The LP3918 contains a Li-Ion battery charger, 7 low noise low dropout (LDO)
voltage regulators and a high-speed serial interface to program on/off conditions and output
voltages of individual regulators, and also to read status information from the PMU.
The Li-Ion charger integrates a power FET, reverse current blocking diode, sense resistor
with current monitor output, and requires only a few external components. Charging is thermally
regulated to obtain the most efficient charging rate for a given ambient temperature.
LDO regulators provide high PSRR and low noise ideally suited for supplying power to both
analog and digital loads.
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