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ADP3522ACP-1.8 Datasheet(PDF) 1 Page - Analog Devices |
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ADP3522ACP-1.8 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. 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 © 2003 Analog Devices, Inc. All rights reserved. ADP3522 GSM Power Management System FEATURES Handles all GSM Baseband Power Management 6 LDOs Optimized for Specific GSM Subsystems Li-Ion Battery Charge Function Optimized for the AD20msp430 Baseband Chipset Reduced Package Size: 5 mm 5 mm LFCSP-32 APPLICATIONS GSM/GPRS Handsets FUNCTIONAL BLOCK DIAGRAM PWRONKEY PWRONIN TCXOEN CHRDET EOC BATSNS VRTCIN ROWX CHGEN ISENSE CHRIN RESCAP VBAT VBAT2 POWER-UP SEQUENCING AND PROTECTION LOGIC SIMEN SIMVSEL DGND VCORE AGND MVBAT VTCXO VAN VMEM VRTC REFOUT VSIM GATEDR GATEIN RESET ADP3522 SIM LDO DIGITAL CORE LDO ANALOG LDO TCXO LDO MEMORY LDO RTC LDO REF BUFFER BATTERY VOLTAGE DIVIDER BATTERY CHARGE CONTROLLER GENERAL DESCRIPTION The ADP3522 is a multifunction power system chip optimized for GSM/GPRS handsets, especially those based on the Analog Devices AD20msp430 system solution with 1.8 V digital baseband processors, such as the AD6525, AD6526, and AD6528. It contains six LDOs, one to power each of the critical GSM subblocks. Sophisticated controls 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 (EOC) signal when a Li-Ion battery is being charged. This product also meets the market trend of reduced size with a new LFCSP package. Its footprint is only 5 mm 5 mm and yet offers excellent ther- mal performance due to the exposed die attached paddle. The ADP3522 is specified over the temperature range of –20 °C to +85°C. |
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