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 sub-blocks. 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.
The ADP3408 is specified over the temperature range of –20°C to +85°C and is available in narrow body TSSOP-28 pin package.

FEATURES
   Handles all GSM Baseband Power Management
   Six 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