FEATURES
• Fully Integrated Li-Ion Battery Charger with
Thermal Regulation
• USB Charge Mode
• 7 Low Noise LDO’s
– 2 x 300 mA
– 3 x 150 mA
– 2 x 80 mA
• I2C Compatible Interface for Controlling LDO
Outputs and Charger Operation
• Thermal Shutdown
• Under Voltage Lockout
• 25-Bump Thin DSBGA Package 2.5 x 2.5 mm
• Options Available on Request, Please Contact
Sales Office for Further Information;
– Level Detect on HF_PWR & PWR_ON
– LDO Charging Mode
– Custom Default Settings on Charger, and
LDO O/P's.

APPLICATIONS
• CDMA Phone Handsets
• Low Power Wireless Handsets
• Handheld Information Appliances
• Personal Media Players
• Digital Cameras

KEY SPECIFICATIONS
• 50mA to 950mA Programmable Charge
Current
• 3.0V to 5.5V Input Voltage Range
• 200mV Typ. Dropout Voltage on 300 mA LDO’s
• 2% (Typ) Output Voltage Accuracy on LDO’s

DESCRIPTION
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.