ADP3401

Obsolete

GSM Power Management System for use with AD20msp425

Data Sheet (Rev. 0) Product Selection Table

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Overview

Handles all GSM Baseband Power Management Functions
Four LDOs Optimized for Specific GSM Subsystems

Charges Li-Mn Coin Cell for Real-Time Clock
Charge Pump and Logic Level
Translators for 3 V and 5 V
GSM SIM Modules
Thermally Enhanced 6.1 mm 28-Lead
TSSOP Package

The ADP3401 is a multifunction power system chip optimized for GSM cell phone power management. It contains four LDOs, one to power each of the critical GSM sub-blocks, a step-up converter for the SIM module, and level translation circuitry to adapt logic signals for 3 V or 5 V SIM modules. Sophisticated controls are available for power up during battery charging, keypad interface and charging of an auxillary lithium coin cell battery for the real time clock.