LP3941LQX-A datasheet(1/32 Pages) NSC

Teilenummer	LP3941LQX-A

Bauteilbeschribung	Cellular Phone Power Management Unit

PDF	32 Pages

Scroll/Zoom	100%

Hersteller	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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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 regu-

lators, 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 I

2C compatible

serial interface to program individual regulator output volt-

ages as well as on/off control.

LP3941 is available in a LLP48 package.

Features

n

11 low dropout, low noise LDOs.

n

Dedicated low current LDO for real time clock supply.

n

Back-up battery charger

n

A constant current / constant voltage battery charger

controller with charge status indication via I

2C

compatible interface.

n

Three open drain drivers to control a RGB LED

n

I

2C compatible serial interface for maximum flexibility

Applications

n

GSM/EDGE cellular handsets

n

Wideband CDMA cellular handsets

Key Specifications

n

3.0V to 5.5V Input Voltage Range

n

27 µV

RMS Output noise

n

2% (typical) Output Voltage Accuracy

n

1% Charger Voltage Accuracy

Typical Application

20094501

May 2004

DS200945

www.national.com

Ähnliche Beschreibung - LP3941LQX-A

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LP3941LQX-A Datenblatt(PDF) 1 Page - National Semiconductor (TI)

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