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ADP3510
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700www.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: H1154620H11543C to +85H11543C
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.