REV. 0

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a

ADP3510

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

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

CDMA Power Management System

FUNCTIONAL BLOCK DIAGRAM

TCXOEN

ADP3510

BATTERY

CHARGE

CONTROLLER

POWER-UP

SEQUENCING

AND

PROTECTION

LOGIC

DIGITAL

CORE LDO

VIO

LDO

TCXO

LDO

MEMORY

LDO

REF

BUFFER

BATTERY

VOLTAGE

DIVIDER

VBAT

VBAT2

PWRONKEY

ROWX

PWRONIN

ALARM

PDCAP

CHRDET

EOC

CHGEN

GATEIN

BATSNS

ISENSE

GATEDR

CHRIN

VTRC

VIO

VCORE

VTCXO

VMEM

VAN

REFOUT

RESET

MVBAT

DGND

AGND

RESCAP

ANALOG

LDO

RTC

FEATURES

Handles All CDMA Baseband Power Management

Six LDOs Optimized for Specific CDMA Subsystems

Li-Ion and NiMH Battery Charge Function

Ambient Temperature:

20 C to +85 C

TSSOP 28-Lead Package

Optimized for LSI Logic Baseband Chipset

APPLICATIONS

CDMA Handsets

GENERAL DESCRIPTION

The ADP3510 is a multifunction power system chip optimized for

CDMA handset power management. It contains six specialized

LDOs, one to power each of the critical CDMA subblocks.

Sophisticated controls are available for power-up during battery

charging, keypad interface, and RTC alarm. If a Li-Ion battery

is being charged, the charge circuit maintains low current

charging during the initial charge phase and provides an end of

charge (EOC) signal when the cell has been fully charged.

The ADP3510 is specified over the temperature range of –20

∞C to

+85

∞C and is available in a narrow body TSSOP 28-Lead package.