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ADP3500AST Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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ADP3500AST Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 29 page  a CDMA Power Management System Preliminary Technical Data ADP3500 FEATURES Handles all CDMA Baseband and RF/IF Power Management Functions LDOs Optimized for Specific CDMA Subsystems Four Backup LDOs for Stand-By mode operation Four Li-Ion Battery Charge Modes 5mA Pre Charge Low Current Charge Full Current Charge Regulator mode (no current limit) Ambient Temperature: -30 °°°°Cto+85 °°°°C 64pin 7x7 LQFP package APPLICATIONS CDMA/CDMA2000/PCS Handsets GENERAL DESCRIPTION The ADP3500 is a multifunction power system chip optimized for CDMA cell phone power management. It contains 15 LDOs. Sophisticated controls are available for power up during battery charging, keypad interface, GPIO/INT function and RTC function. The battery charger has four modes as Pre-charge, Low Current Charge, Full Current Charge, and Regulator modes, and is designed for Li-Ion/Li-Polymer batteries. REV. PrP 2/6/02 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 which may result from its use. No license is granted by implication or otherwise under any patent or apatent rights of Analog Devices. RESET OUTPUT RESET 32KHz OUTPUT CONTROL POWER ON KEYPAD I/F GPIO SERIAL I/F DELAY 10mS INTERRUPT CONTROL LDO CONTROL BATTERY CHARGER REFERENCE LDO1 to 11 VOLTAGE DETECTOR ANALOG BLOCK RTC COUNTER STAY-ALIVE TIMER LOGIC BLOCK ADP3500 Figure 1. Functional Block Diagram One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-87ß3 ANALOG DEVICES, INC., 2002 PRELIMINARY TECHNICAL DATA |
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