Datasheet > ADP3408ARU-2.5-RL

ADP3408ARU-2.5-RL

更新时间： 2024-11-23 14:40:47

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管
页数	文件大小	规格书
20页	439K
描述
IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO28, MO-153AE, TSSOP-28, Power Management Circuit

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GSM Power Management System

ADP3408

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Handles All GSM Baseband Power Management

6 LDOs Optimized for Specific GSM Subsystems

Li-Ion and NiMH Battery Charge Function

Optimized for the AD20msp430 Baseband Chipset

VBAT VBAT2 VRTCIN

SIM

VSIM

LDO

APPLICATIONS

GSM/DCS/PCS/CDMA Handsets

DIGITAL

VCORE

CORE LDO

PWRONKEY

ANALOG

LDO

ROWX

VAN

PWRONIN

TCXO

LDO

POWER-UP

SEQUENCING

AND

PROTECTION

LOGIC

VTCXO

VMEM

VRTC

MEMORY

LDO

TCXOEN

SIMEN

GENERAL DESCRIPTION

The ADP3408 is a multifunction power system chip optimized

for GSM handsets, especially those based on the Analog Devices

AD20msp430 system solution. It contains six LDOs, one to

power each of the critical GSM subblocks. Sophisticated con-

trols are available for power-up during battery charging, keypad

interface, and RTC alarm. The charge circuit maintains low

current charging during the initial charge phase and provides an

end-of-charge signal when a Li-ion battery is being charged.

RTC

LDO

RESCAP

REF

REFOUT

RESET

BUFFER

CHRDET

EOC

BATTERY

CHARGE

DIVIDER

MVBAT

DGND

The ADP3408 is specified over the temperature range of –20°C to

+85°C and is available in a narrow body TSSOP 28-lead package

or 5 mm ꢀ 5 mm LFCSP 32-lead package.

CHGEN

GATEIN

BATSNS

ISENSE

GATEDR

CHRIN

BATTERY

CHARGE

CONTROLLER

27 AGND

ADP3408

(Pin Assignment Is for TSSOP Option)

REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

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