LTC4555

PRODUCTION

SIM Power Supply and Level Translator

Data Sheet Product Selection Table
Viewing:

Overview

  • SIM Power Supply: 1.8V/3V at 50mA
  • Input Voltage Range: 3V to 6V
  • Controller Voltage Range: 1.2V to 4.4V
  • 14kV ESD on all SIM Contact Pins
  • Meets all ETSI, IMT-2000 and ISO7816 SIM/Smart Card Interface Requirements
  • Level Translators to 1.8V or 3V
  • 20µA Operating Current
  • Logic Controlled Shutdown (ISD < 1µA)
  • Available in 0.75mm Profile, 3mm x 3mm QFN Package

The LTC4555 provides power conversion and signal level shifting needed for low voltage 2.5G and 3G cellular telephones to interface with 1.8V or 3V subscriber identity modules (SIMs). The part meets all type approval requirements for 1.8V and 3V SIMs and smart cards. The part contains an LDO linear regulator to supply SIM power at either 1.8V or 3V from a 3V to 6V input. The output voltage is selected with a single pin and up to 50mA of load current can be supplied.

Internal level translators allow controllers operating with supplies as low as 1.2V to interface with 1.8V or 3V smart cards. Battery life is maximized by 20µA operating current and <1µA shutdown current. Board area is minimized by the 3mm x 3mm leadless QFN package.

Applications

  • SIM Interface in 3G Cellular Telephones
  • Smart Card Readers
LTC4555
SIM Power Supply and Level Translator
Typical SIM Interface Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC4555
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Latest Discussions

No discussions on LTC4555 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed