ADP3500

PRELIMINARY TECHNICAL DATA 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 °C to +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. LOGIC BLOCK POWER ON DELAY 10mS KEYPAD I/F INTERRUPT CONTROL GPIO LDO CONTROL SER...