Typical Application Circuit for LTC1555CGN GSM Cellular Telephone SIM Interface

Reference Design using part LTC1555CGN by Analog Devices

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Manufacturer

Analog Devices
  • Application Category
    Power Supplies
  • Product Type
    DC to DC Single Output Power Supplies

For End Products

  • Card Reader
  • GSM

Description

  • Typical Application Circuit for LTC1555CGN GSM Cellular Telephone SIM Interface. The LTC1555 provides power conversion and level shifting needed for 3V GSM cellular telephones to interface with either 3V or 5V Subscriber Identity Modules (SIMs). These parts contain a charge pump DC/DC converter that delivers a regulated 5V to the SIM card. Input voltage may range from 2.7V to 10V, allowing direct connection to the battery. Output voltage may be programmed to 3V, 5V or direct connection to the VIN pin

Key Features

  • Conversion Type
    DC to DC
  • Input Voltage
    2.7 to 10 V
  • Output Voltage
    3|5 V

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