LP3923 Datasheet (National Semiconductor) - Cellular Phone Power Management

LP3923, Cellular Phone Power Management

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-voltage-protection (OVP), one Buck regulator, 8 low-noise low-dropout (LDO) voltage regulators, and a high-speed s

LP3923 Features

* 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 inducta