LP3923 Overview
The LP3923 is a fully Integrated Power Management Unit (PMU) designed for CDMA cellular phones. The LP3923 PMU contains a fully integrated Li-Ion battery charger with power FET and over-voltageprotection (OVP), one Buck regulator, 8 low-noise low-dropout (LDO) voltage regulators, and a highspeed serial interface to program on/off conditions and output voltages of individual regulators, and to read status information...
LP3923 Key Features
- 2 Integrated Li-Ion Battery Charger with Power FET, Thermal Regulation and 28V OVP
- Six Low-Noise LDOs, Two LILO LDOs
- 3 x 300 mA
- 4 x 150 mA
- 1 x 80 mA
- One High Efficiency Synchronous Magnetic Buck Regulators, IOUT 700 mA
- High Efficiency PFM Mode @low IOUT
- Auto Mode PFM/PWM Switch
- Low Inductance 2.2 µH @ 2 MHz Clock
- I2C-patible Interface for Controlling LDO Outputs and Charger Operation
