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LP3941A - Cellular Phone Power Management

Description

LP3941A is a complete power management IC designed for a cellular phone.

Features

  • n n n n 11 low dropout, low noise LDOs. Dedicated low current LDO for real time clock supply. Back-up battery charger A constant current / constant voltage battery charger controller with charge status indication via I2C compatible interface. Typical.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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May 2004 www.DataSheet4U.com LP3941A Cellular Phone Power Management Unit LP3941A Cellular Phone Power Management Unit General Description LP3941A is a complete power management IC designed for a cellular phone. It contains 11 low noise low dropout regulators, a linear charger for Li-Ion battery, a backup battery charger, real time clock supply regulator, three open drain drivers, two comparators and high speed I2C compatible serial interface to program individual regulator output voltages as well as on/off control. LP3941 is available in a LLP48 package. n Three open drain drivers to control a RGB LED n I2C compatible serial interface for maximum flexibility Applications n GSM/EDGE cellular handsets n Wideband CDMA cellular handsets Key Specifications n n n n 3.0V to 5.
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