LP3971 datasheet(1/42 Pages) NSC

tên linh kiện	LP3971

Giải thích chi tiết về linh kiện	POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS

PDF	42 Pages

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nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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LP3971

Power Management Unit for Advanced Application

Processors

General Description

The LP3971 is a multi-function, programmable Power Man-

agement Unit, designed especially for advanced application

processors. The LP3971 is optimized for low power hand-

held applications and provides 6 low dropout, low noise

linear regulators, three DC/DC magnetic buck regulators, a

back-up battery charger and two GPIO’s. A high speed serial

interface is included to program individual regulator output

voltages as well as on/off control.

Key Specifications

Buck Regulators

n

Programmable V

OUT from 0.8 to 3.3V

n

Up to 95% efficiency

n

Up to 1.6A output current

n ±

3% output voltage accuracy

LDO’s

n

Programmable V

OUT of 1.0V–3.3V

n ±

3% output voltage accuracy

n

150/300/370 mA output currents

— LDO RTC30mA

— LDO 1 300 mA

— LDO 2 150 mA

— LDO 3 150 mA

— LDO 4 150 mA

— LDO 5 370 mA

n

100 mV (typ) dropout

Features

n

Compatible with advanced applications processors

requiring DVM (Dynamic Voltage Management)

n

Three buck regulators for powering high current

processor functions or I/O’s

n

6 LDO’s for powering RTC, peripherals, and I/O’s

n

Backup battery charger with automatic switch for

lithium-manganese coin cell batteries and Super

capacitors

n

I

2C compatible high speed serial interface

n

Software control of regulator functions and settings

n

Precision internal reference

n

Thermal overload protection

n

Current overload protection

n

Tiny 40-pin 5x5 mm LLP package

Applications

n

PDA phones

n

Smart phones

n

Personal Media Players

n

Digital cameras

n

Application processors

— Intel Xscale

— Freescale

— Samsung

January 2006

DS201807

www.national.com

Số phần tương tự - LP3971

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	LP3971	1Mb / 57P	Power Management Unit for Advanced Application Processors
	LP3971	1Mb / 52P	Power Management Unit for Advanced Application Processors
	LP3971SQ-2G16/NOPB	1Mb / 52P	Power Management Unit for Advanced Application Processors
	LP3971SQ-7848/NOPB	1Mb / 52P	Power Management Unit for Advanced Application Processors
	LP3971SQ-B410/NOPB	1Mb / 52P	Power Management Unit for Advanced Application Processors

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Mô tả tương tự - LP3971

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	LP3970	421Kb / 2P	Power Management Unit for Advanced Application Processors
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Texas Instruments	LP3974	1Mb / 10P	PRODUCT BRIEF High Performance Power Management Unit for Application Processors
	LP3972	1Mb / 59P	Power Management Unit for Advanced Application Processors
	LP3971	1Mb / 57P	Power Management Unit for Advanced Application Processors
	LP3972	1Mb / 63P	Power Management Unit for Advanced Application Processors
	LP3971	1Mb / 52P	Power Management Unit for Advanced Application Processors
Linear Technology	LTC3676	517Kb / 38P	Power Management Solution for Application Processors

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