ADP3402 Datasheet | Analog Devices

a Features Handles all GSM Baseband Power Management Functions Four LDOs Optimized for Specific GSM Subsystems Charges Back-Up Capacitor 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 APPLICATIONS GSM/DCS/PCS Handsets TeleMatic Systems ICO/Iridium Terminals GSM Power Management System ADP3402 FUNCTIONAL BLOCK DIAGRAM VBAT DIGITAL LDO VCC RESET PWRONKEY ROWX POWER-UP SEQUENCING AND PROTECTION LOGIC RTC LDO VRTC PWRONIN ANALOGON RESCAP XTAL OSC LDO VTCXO GENERAL DESCRIPTION The ADP3402 is a multifunction power management system IC optimized for GSM cell phones. The wide input voltage...