GENERAL DESCRIPTION
The ADP3408 is a multifunction power system chip optimized for GSM handsets, especially those based on the Analog Devices AD20msp430 system solution. 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 signal when a Li-ion battery is being charged.
   
FEATURES
    Handles All GSM Baseband Power Management
    6 LDOs Optimized for Specific GSM Subsystems
    Li-Ion and NiMH Battery Charge Function
    Optimized for the AD20msp430 Baseband Chipset
   
APPLICATIONS
    GSM/DCS/PCS/CDMA Handsets