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LTC1555L - SIM Power Supply and Level Translator

Key Features

  • s Buck/Boost Charge Pump Generates 3V or 5V s Input Voltage Range: 2.6V to 6V s Controller VCC Range: 1.425V to 4.4V s >10kV ESD on All SIM Contact Pins s Short-Circuit and Overtemperature Protected s 3V to 5V Signal Level Translators s Very Low Operating Current: 40µA s Very Low Shutdown Current:.

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U U FEATURES s Buck/Boost Charge Pump Generates 3V or 5V s Input Voltage Range: 2.6V to 6V s Controller VCC Range: 1.425V to 4.4V s >10kV ESD on All SIM Contact Pins s Short-Circuit and Overtemperature Protected s 3V to 5V Signal Level Translators s Very Low Operating Current: 40µA s Very Low Shutdown Current: <1µA s Soft-Start Limits Inrush Current at Turn-On s 1MHz Switching Frequency s Available in 16-Pin Narrow SSOP Package U APPLICATIO S s SIM Interface in GSM Cellular Telephones s Smart Card Readers LTC1555L SIM Power Supply and Level Translator DESCRIPTIO The LTC®1555L provides power conversion and level shifting needed for low voltage GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs).